Fix comment

[gnus] / lisp / mm-util.el

diff --git a/lisp/mm-util.el b/lisp/mm-util.el
index 700c1a6..2f6464d 100644 (file)
--- a/lisp/mm-util.el
+++ b/lisp/mm-util.el
@@ -974,6 +974,7 @@ If the charset is `composition', return the actual one."
     ;; This is for XEmacs.
     (mm-mule-charset-to-mime-charset charset)))
 
+;; `delete-dups' is not available in XEmacs 21.4.
 (if (fboundp 'delete-dups)
     (defalias 'mm-delete-duplicates 'delete-dups)
   (defun mm-delete-duplicates (list)