(add-log-buffer-file-name-function): Add defvar.

diff --git a/lisp/diff-mode.el b/lisp/diff-mode.el
index 6cd4c843ad1af746da97638d0f5429f8bb008cfc..09c3b6a89392bfd2d35f0aadad58d14a5e8aad0b 100644 (file)
--- a/lisp/diff-mode.el
+++ b/lisp/diff-mode.el
@@ -55,6 +55,8 @@
 
 (eval-when-compile (require 'cl))
 
+(defvar add-log-buffer-file-name-function)
+
 
 (defgroup diff-mode ()
   "Major mode for viewing/editing diffs."