Fix compiler warning in keyboard.c.

diff --git a/src/keyboard.c b/src/keyboard.c
index bf3ef9ed6dd1bed01585dffbe4ef8dcd06ea0682..4d0c98f3529d5769468e11b51774546083469909 100644 (file)
--- a/src/keyboard.c
+++ b/src/keyboard.c
@@ -8441,7 +8441,9 @@ static Lisp_Object
 read_char_x_menu_prompt (ptrdiff_t nmaps, Lisp_Object *maps,
                         Lisp_Object prev_event, int *used_mouse_menu)
 {
+#ifdef HAVE_MENUS
   ptrdiff_t mapno;
+#endif
 
   if (used_mouse_menu)
     *used_mouse_menu = 0;