* lisp/gnus: Quote functions with #'

To get better warnings, try and use #' to quote function names.

* lisp/gnus/canlock.el:
* lisp/gnus/deuglify.el:
* lisp/gnus/gmm-utils.el:
* lisp/gnus/gnus-agent.el:
* lisp/gnus/gnus-art.el:
* lisp/gnus/gnus-bookmark.el:
* lisp/gnus/gnus-cache.el:
* lisp/gnus/gnus-cite.el:
* lisp/gnus/gnus-cus.el:
* lisp/gnus/gnus-delay.el:
* lisp/gnus/gnus-diary.el:
* lisp/gnus/gnus-dired.el:
* lisp/gnus/gnus-draft.el:
* lisp/gnus/gnus-fun.el:
* lisp/gnus/gnus-group.el:
* lisp/gnus/gnus-html.el:
* lisp/gnus/gnus-int.el:
* lisp/gnus/gnus-kill.el:
* lisp/gnus/gnus-mlspl.el:
* lisp/gnus/gnus-msg.el:
* lisp/gnus/gnus-notifications.el:
* lisp/gnus/gnus-picon.el:
* lisp/gnus/gnus-registry.el:
* lisp/gnus/gnus-rfc1843.el:
* lisp/gnus/gnus-salt.el:
* lisp/gnus/gnus-score.el:
* lisp/gnus/gnus-search.el:
* lisp/gnus/gnus-sieve.el:
* lisp/gnus/gnus-srvr.el:
* lisp/gnus/gnus-start.el:
* lisp/gnus/gnus-topic.el:
* lisp/gnus/gnus-undo.el:
* lisp/gnus/gnus-util.el:
* lisp/gnus/gnus-uu.el:
* lisp/gnus/gnus.el:
* lisp/gnus/mail-source.el:
* lisp/gnus/message.el:
* lisp/gnus/mm-archive.el:
* lisp/gnus/mm-decode.el:
* lisp/gnus/mm-url.el:
* lisp/gnus/mm-util.el:
* lisp/gnus/mm-view.el:
* lisp/gnus/mml-sec.el:
* lisp/gnus/mml-smime.el:
* lisp/gnus/mml.el:
* lisp/gnus/nnagent.el:
* lisp/gnus/nndiary.el:
* lisp/gnus/nndoc.el:
* lisp/gnus/nndraft.el:
* lisp/gnus/nnfolder.el:
* lisp/gnus/nnheader.el:
* lisp/gnus/nnmail.el:
* lisp/gnus/nnmaildir.el:
* lisp/gnus/nnmairix.el:
* lisp/gnus/nnmh.el:
* lisp/gnus/nnml.el:
* lisp/gnus/nnrss.el:
* lisp/gnus/nnselect.el:
* lisp/gnus/nnspool.el:
* lisp/gnus/nnvirtual.el:
* lisp/gnus/nnweb.el:
* lisp/gnus/smiley.el:
* lisp/gnus/smime.el:
* lisp/gnus/spam-report.el:
* lisp/gnus/spam-stat.el:
* lisp/gnus/spam-wash.el:
* lisp/gnus/spam.el:

lisp/gnus/nnml.el

@@ -278,8 +278,8 @@ non-nil.")
       (let* ((file-name-coding-system nnmail-pathname-coding-system)
 	     (articles (nnml-directory-articles nnml-current-directory)))
 	(when articles
-	  (setcar active (apply 'min articles))
-	  (setcdr active (apply 'max articles))))
+	  (setcar active (apply #'min articles))
+	  (setcdr active (apply #'max articles))))
       (nnmail-save-active nnml-group-alist nnml-active-file)
       t))))
 
@@ -307,7 +307,7 @@ non-nil.")
 	 article rest mod-time number target)
     (nnmail-activate 'nnml)
 
-    (setq active-articles (sort active-articles '<))
+    (setq active-articles (sort active-articles #'<))
     ;; Articles not listed in active-articles are already gone,
     ;; so don't try to expire them.
     (setq articles (gnus-sorted-intersection articles active-articles))
@@ -353,7 +353,7 @@ non-nil.")
     (let ((active (nth 1 (assoc-string group nnml-group-alist))))
       (when active
 	(setcar active (or (and active-articles
-				(apply 'min active-articles))
+				(apply #'min active-articles))
 			   (1+ (cdr active)))))
       (nnmail-save-active nnml-group-alist nnml-active-file))
     (nnml-save-nov)
@@ -705,7 +705,7 @@ article number.  This function is called narrowed to an article."
 	(setq nnml-article-file-alist
 	      (sort
 	       (nnml-current-group-article-to-file-alist)
-	       'car-less-than-car)))
+	       #'car-less-than-car)))
       (setq active
 	    (if nnml-article-file-alist
 		(cons (caar nnml-article-file-alist)
@@ -856,7 +856,7 @@ Unless no-active is non-nil, update the active file too."
 	  (nnml-generate-nov-databases-directory dir seen)))
       ;; Do this directory.
       (let ((nnml-files (sort (nnheader-article-to-file-alist dir)
-			 'car-less-than-car)))
+			      #'car-less-than-car)))
 	(if (not nnml-files)
 	    (let* ((group (nnheader-file-to-group
 			   (directory-file-name dir) nnml-directory))
@@ -1010,7 +1010,7 @@ Use the nov database for the current group if available."
   (unless nnml-article-file-alist
     (setq nnml-article-file-alist
 	  (sort (nnml-current-group-article-to-file-alist)
-		'car-less-than-car)))
+		#'car-less-than-car)))
   (if (not nnml-article-file-alist)
       ;; The group is empty: do nothing but return t
       t