[PATCH] Fix one remaining emacs-30 byte-compile warning

[Arash Esbati <arash@gnu.org>]

Hi all,

Robert sent a patch[1] which pacifies emacs-30 compiler warning.  He
missed one which is fixed by the patch below.  It is against org-mode
master (6b15897a56).

Footnotes:
[1]  https://lists.gnu.org/archive/html/emacs-orgmode/2023-01/msg00743.html

Best, Arash

--8<---------------cut here---------------start------------->8---
diff --git a/lisp/ox.el b/lisp/ox.el
index ebf89bb..4c84686 100644
--- a/lisp/ox.el
+++ b/lisp/ox.el
@@ -6683,14 +6683,14 @@ see.
 Optional argument POST-PROCESS is a function which should accept
 no argument.  It is always called within the current process,
 from BUFFER, with point at its beginning.  Export back-ends can
-use it to set a major mode there, e.g,
+use it to set a major mode there, e.g.,

   (defun org-latex-export-as-latex
     (&optional async subtreep visible-only body-only ext-plist)
     (interactive)
     (org-export-to-buffer \\='latex \"*Org LATEX Export*\"
       async subtreep visible-only body-only ext-plist
-      #'LaTeX-mode))
+      #\\='LaTeX-mode))

 When expressed as an anonymous function, using `lambda',
 POST-PROCESS needs to be quoted.
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