(menu-bar-mode): Make arg optional.

diff --git a/lisp/menu-bar.el b/lisp/menu-bar.el
index b33a594f27dfb3a14bc3293a2a143ae4b3856c06..625808c4da10df783f8cda7ec55cfb246397372c 100644 (file)
--- a/lisp/menu-bar.el
+++ b/lisp/menu-bar.el
@@ -1286,7 +1286,7 @@ use either \\[customize] or the function `menu-bar-mode'."
   :type 'boolean
   :group 'frames)
 
-(defun menu-bar-mode (flag)
+(defun menu-bar-mode (&optional flag)
   "Toggle display of a menu bar on each frame.
 This command applies to all frames that exist and frames to be
 created in the future.