[gtk+] app: improve code of extract_accels_from_menu()

[Sébastien Wilmet <swilmet src gnome org>]

commit 1f87c1cc0bec13db3641631f298e8f4a830ca455
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sun Apr 10 12:41:09 2016 +0200

    app: improve code of extract_accels_from_menu()
    
    sub_model is clearer than "m". And we don't use the key, so we can pass
    NULL instead.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=764846

 gtk/gtkapplication.c |   12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)
---
diff --git a/gtk/gtkapplication.c b/gtk/gtkapplication.c
index 49c7dd7..c96cf7a 100644
--- a/gtk/gtkapplication.c
+++ b/gtk/gtkapplication.c
@@ -829,19 +829,19 @@ extract_accels_from_menu (GMenuModel     *model,
                           GtkApplication *app)
 {
   gint i;
-  GMenuLinkIter *iter;
-  const gchar *key;
-  GMenuModel *m;
 
   for (i = 0; i < g_menu_model_get_n_items (model); i++)
     {
+      GMenuLinkIter *iter;
+      GMenuModel *sub_model;
+
       extract_accel_from_menu_item (model, i, app);
 
       iter = g_menu_model_iterate_item_links (model, i);
-      while (g_menu_link_iter_get_next (iter, &key, &m))
+      while (g_menu_link_iter_get_next (iter, NULL, &sub_model))
         {
-          extract_accels_from_menu (m, app);
-          g_object_unref (m);
+          extract_accels_from_menu (sub_model, app);
+          g_object_unref (sub_model);
         }
       g_object_unref (iter);
     }