* xmenu.c (create_and_show_popup_menu): Port comment to C89.

src/ChangeLog

+2014-01-29  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* xmenu.c (create_and_show_popup_menu): Port comment to C89.
+
 2014-01-29  Eli Zaretskii  <eliz@gnu.org>
 
 	* .gdbinit (xprintstr, xprintbytestr): Don't use repetition count

src/xmenu.c

@@ -1306,7 +1306,7 @@ create_and_show_popup_menu (struct frame *f, widget_value *first_wv,
       for (i = 0; i < 5; i++)
         if (FRAME_DISPLAY_INFO (f)->grabbed & (1 << i))
           break;
-      // If keys aren't grabbed (i.e. a mouse up event), use 0.
+      /* If keys aren't grabbed (i.e., a mouse up event), use 0.  */
       if (i == 5) i = 0;
     }