* xmenu.c (Fx_popup_dialog): Don't assume string is free of formats.

src/ChangeLog

@@ -2,6 +2,8 @@
 
 	Fix more problems found by GCC 4.6.0's static checks.
 
+	* xmenu.c (Fx_popup_dialog): Don't assume string is free of formats.
+
 	* menu.c (Fx_popup_menu): Don't assume error_name lacks printf formats.
 
 	* fns.c (Fstring_to_unibyte): Don't rely on undefined behavior

src/xmenu.c

@@ -341,7 +341,7 @@ for instance using the window manager, then this produces a quit and
     unbind_to (specpdl_count, Qnil);
     discard_menu_items ();
 
-    if (error_name) error (error_name);
+    if (error_name) error ("%s", error_name);
     return selection;
   }
 #endif