; Kill some stray buffers left behind by ERC tests

* test/lisp/erc/erc-services-tests.el
(erc--auth-source-search--plstore-standard,
erc--auth-source-search--plstore-announced,
erc--auth-source-search--plstore-overrides): Kill buffer renamed by
plstore.  In the future, try using the `:buffer' keyword introduced in
Emacs 29.
* test/lisp/erc/resources/erc-d/erc-d-t.el
(erc-d-t-kill-related-buffers): Don't forget about `erc-dcc-chat-mode'
buffers.

test/lisp/erc/erc-services-tests.el

@@ -248,7 +248,8 @@
     (let ((auth-sources (list plstore-file))
           (auth-source-do-cache nil))
       (erc-services-tests--auth-source-standard
-       #'erc-services-test--call-with-plstore))))
+       #'erc-services-test--call-with-plstore))
+    (kill-buffer (get-file-buffer plstore-file))))
 
 (ert-deftest erc--auth-source-search--plstore-announced ()
   (ert-with-temp-file plstore-file
@@ -264,7 +265,8 @@
     (let ((auth-sources (list plstore-file))
           (auth-source-do-cache nil))
       (erc-services-tests--auth-source-announced
-       #'erc-services-test--call-with-plstore))))
+       #'erc-services-test--call-with-plstore))
+    (kill-buffer (get-file-buffer plstore-file))))
 
 (ert-deftest erc--auth-source-search--plstore-overrides ()
   (ert-with-temp-file plstore-file
@@ -296,7 +298,8 @@
     (let ((auth-sources (list plstore-file))
           (auth-source-do-cache nil))
       (erc-services-tests--auth-source-overrides
-       #'erc-services-test--call-with-plstore))))
+       #'erc-services-test--call-with-plstore))
+    (kill-buffer (get-file-buffer plstore-file))))
 
 ;; auth-source JSON backend
 

test/lisp/erc/resources/erc-d/erc-d-t.el

@@ -32,7 +32,7 @@
     (dolist (buf (buffer-list))
       (with-current-buffer buf
         (when (or erc-d-u--process-buffer
-                  (derived-mode-p 'erc-mode))
+                  (derived-mode-p 'erc-mode 'erc-dcc-chat-mode))
           (push buf buflist))))
     (dolist (buf buflist)
       (when (and (boundp 'erc-server-flood-timer)