Use nullptr instead of std::unique_ptr<Type>().

Telegram/SourceFiles/boxes/contacts_box.cpp

@@ -601,7 +601,7 @@ ContactsBox::Inner::Inner(QWidget *parent, ChatData *chat, MembersFilter members
 , _aboutWidth(st::boxWideWidth - st::contactsPadding.left() - st::contactsPadding.right())
 , _aboutAllAdmins(st::defaultTextStyle, lang(lng_chat_about_all_admins), _defaultOptions, _aboutWidth)
 , _aboutAdmins(st::defaultTextStyle, lang(lng_chat_about_admins), _defaultOptions, _aboutWidth)
-, _customList((membersFilter == MembersFilter::Recent) ? std::unique_ptr<Dialogs::IndexedList>() : std::make_unique<Dialogs::IndexedList>(Dialogs::SortMode::Add))
+, _customList((membersFilter == MembersFilter::Recent) ? nullptr : std::make_unique<Dialogs::IndexedList>(Dialogs::SortMode::Add))
 , _contacts((membersFilter == MembersFilter::Recent) ? App::main()->contactsList() : _customList.get())
 , _addContactLnk(this, lang(lng_add_contact_button)) {
 	initList();

Telegram/SourceFiles/boxes/edit_privacy_box.cpp

@@ -78,12 +78,13 @@ void PrivacyExceptionsBoxController::rowClicked(gsl::not_null<PeerListRow*> row)
 }
 
 std::unique_ptr<PrivacyExceptionsBoxController::Row> PrivacyExceptionsBoxController::createRow(gsl::not_null<History*> history) {
-	if (auto user = history->peer->asUser()) {
-		if (!user->isSelf()) {
-			return std::make_unique<Row>(history);
-		}
+	if (history->peer->isSelf()) {
+		return nullptr;
 	}
-	return std::unique_ptr<Row>();
+	if (auto user = history->peer->asUser()) {
+		return std::make_unique<Row>(history);
+	}
+	return nullptr;
 }
 
 } // namespace

Telegram/SourceFiles/boxes/peer_list_box.h

@@ -258,7 +258,7 @@ public:
 		return _searchController ? _searchController->isLoading() : false;
 	}
 	virtual std::unique_ptr<PeerListRow> createSearchRow(gsl::not_null<PeerData*> peer) {
-		return std::unique_ptr<PeerListRow>();
+		return nullptr;
 	}
 
 	bool isRowSelected(gsl::not_null<PeerData*> peer) {

Telegram/SourceFiles/history/history_widget.cpp

@@ -4275,7 +4275,7 @@ void HistoryWidget::uploadFiles(const QStringList &files, SendMediaType type) {
 	if (!canWriteMessage()) return;
 
 	auto caption = QString();
-	uploadFilesAfterConfirmation(files, QByteArray(), QImage(), std::unique_ptr<FileLoadTask::MediaInformation>(), type, caption);
+	uploadFilesAfterConfirmation(files, QByteArray(), QImage(), nullptr, type, caption);
 }
 
 void HistoryWidget::uploadFilesAfterConfirmation(const QStringList &files, const QByteArray &content, const QImage &image, std::unique_ptr<FileLoadTask::MediaInformation> information, SendMediaType type, QString caption) {

Telegram/SourceFiles/inline_bots/inline_bot_layout_item.cpp

@@ -121,7 +121,7 @@ std::unique_ptr<ItemBase> ItemBase::createLayout(gsl::not_null<Context*> context
 	case Type::Game: return std::make_unique<internal::Game>(context, result); break;
 	case Type::Contact: return std::make_unique<internal::Contact>(context, result); break;
 	}
-	return std::unique_ptr<ItemBase>();
+	return nullptr;
 }
 
 std::unique_ptr<ItemBase> ItemBase::createLayoutGif(gsl::not_null<Context*> context, DocumentData *document) {

Telegram/SourceFiles/inline_bots/inline_bot_result.cpp

@@ -60,7 +60,7 @@ std::unique_ptr<Result> Result::create(uint64 queryId, const MTPBotInlineResult
 	};
 	Type type = getInlineResultType(mtpData);
 	if (type == Type::Unknown) {
-		return std::unique_ptr<Result>();
+		return nullptr;
 	}
 
 	auto result = std::make_unique<Result>(Creator{ queryId, type });
@@ -100,18 +100,18 @@ std::unique_ptr<Result> Result::create(uint64 queryId, const MTPBotInlineResult
 	bool badAttachment = (result->_photo && !result->_photo->access) || (result->_document && !result->_document->isValid());
 
 	if (!message) {
-		return std::unique_ptr<Result>();
+		return nullptr;
 	}
 
 	// Ensure required media fields for layouts.
 	if (result->_type == Type::Photo) {
 		if (!result->_photo && result->_content_url.isEmpty()) {
-			return std::unique_ptr<Result>();
+			return nullptr;
 		}
 		result->createPhoto();
 	} else if (result->_type == Type::File || result->_type == Type::Gif || result->_type == Type::Sticker) {
 		if (!result->_document && result->_content_url.isEmpty()) {
-			return std::unique_ptr<Result>();
+			return nullptr;
 		}
 		result->createDocument();
 	}
@@ -186,7 +186,7 @@ std::unique_ptr<Result> Result::create(uint64 queryId, const MTPBotInlineResult
 	}
 
 	if (badAttachment || !result->sendData || !result->sendData->isValid()) {
-		return std::unique_ptr<Result>();
+		return nullptr;
 	}
 
 	if (result->_thumb->isNull() && !result->_thumb_url.isEmpty()) {

Telegram/SourceFiles/media/media_audio.cpp

@@ -616,7 +616,7 @@ bool Mixer::fadedStop(AudioMsgId::Type type, bool *fadedStart) {
 
 void Mixer::play(const AudioMsgId &audio, int64 position) {
 	setSongVolume(Global::SongVolume());
-	play(audio, std::unique_ptr<VideoSoundData>(), position);
+	play(audio, nullptr, position);
 }
 
 void Mixer::play(const AudioMsgId &audio, std::unique_ptr<VideoSoundData> videoData, int64 position) {

Telegram/SourceFiles/profile/profile_channel_controllers.cpp

@@ -121,7 +121,7 @@ std::unique_ptr<PeerListRow> ParticipantsBoxController::createSearchRow(gsl::not
 	if (auto user = peer->asUser()) {
 		return createRow(user);
 	}
-	return std::unique_ptr<PeerListRow>();
+	return nullptr;
 }
 
 template <typename Callback>
@@ -691,12 +691,13 @@ AddParticipantBoxController::AddParticipantBoxController(gsl::not_null<ChannelDa
 }
 
 std::unique_ptr<PeerListRow> AddParticipantBoxController::createSearchRow(gsl::not_null<PeerData*> peer) {
-	if (!peer->isSelf()) {
-		if (auto user = peer->asUser()) {
-			return createRow(user);
-		}
+	if (peer->isSelf()) {
+		return nullptr;
 	}
-	return std::unique_ptr<PeerListRow>();
+	if (auto user = peer->asUser()) {
+		return createRow(user);
+	}
+	return nullptr;
 }
 
 void AddParticipantBoxController::prepare() {

Telegram/SourceFiles/settings/settings_privacy_controllers.cpp

@@ -83,12 +83,15 @@ void BlockUserBoxController::rowClicked(gsl::not_null<PeerListRow*> row) {
 }
 
 std::unique_ptr<BlockUserBoxController::Row> BlockUserBoxController::createRow(gsl::not_null<History*> history) {
+	if (history->peer->isSelf()) {
+		return nullptr;
+	}
 	if (auto user = history->peer->asUser()) {
 		auto row = std::make_unique<Row>(history);
 		updateIsBlocked(row.get(), user);
 		return row;
 	}
-	return std::unique_ptr<Row>();
+	return nullptr;
 }
 
 } // namespace

Telegram/SourceFiles/ui/countryinput.cpp

@@ -392,7 +392,7 @@ void CountrySelectBox::Inner::mousePressEvent(QMouseEvent *e) {
 		if (_ripples.size() <= _pressed) {
 			_ripples.reserve(_pressed + 1);
 			while (_ripples.size() <= _pressed) {
-				_ripples.push_back(std::unique_ptr<Ui::RippleAnimation>());
+				_ripples.push_back(nullptr);
 			}
 		}
 		if (!_ripples[_pressed]) {

Telegram/SourceFiles/window/themes/window_theme_preview.cpp

@@ -893,7 +893,7 @@ std::unique_ptr<Preview> GeneratePreview(const QString &filepath, const CurrentD
 	auto result = std::make_unique<Preview>();
 	result->path = filepath;
 	if (!LoadFromFile(filepath, &result->instance, &result->content)) {
-		return std::unique_ptr<Preview>();
+		return nullptr;
 	}
 	result->preview = Generator(result->instance, data).generate();
 	return result;