File descriptor fixes for XDPOpenWithDialog

- Open it with O_CLOEXEC
- Remove unneseccary std::array complication
- Rely on Gio::UnixFDList to close it

Telegram/SourceFiles/platform/linux/file_utilities_linux.cpp

@@ -44,14 +44,12 @@ bool UnsafeShowOpenWith(const QString &filepath) {
 
 	const auto fd = open(
 		QFile::encodeName(filepath).constData(),
-		O_RDONLY);
+		O_RDONLY | O_CLOEXEC);
 
 	if (fd == -1) {
 		return false;
 	}
 
-	const auto fdGuard = gsl::finally([&] { close(fd); });
-
 	const auto handleToken = "tdesktop"
 		+ std::to_string(base::RandomValue<uint>());
 
@@ -73,6 +71,7 @@ bool UnsafeShowOpenWith(const QString &filepath) {
 			nullptr));
 
 	if (!request) {
+		close(fd);
 		return false;
 	}
 
@@ -107,7 +106,7 @@ bool UnsafeShowOpenWith(const QString &filepath) {
 				GLib::Variant::new_variant(
 					GLib::Variant::new_boolean(true))),
 		}),
-		Gio::UnixFDList::new_from_array((std::array{ fd }).data(), 1),
+		Gio::UnixFDList::new_from_array(&fd, 1),
 		nullptr);
 
 	if (!result) {

Telegram/lib_base

@@ -1 +1 @@
-Subproject commit e2c62ef0b4581d84e4ff79623a7e5e9ed315bad7
+Subproject commit 4d56f8b4bba52b46844f46fafa5f9b6b2704429e