[gtk+] Use NULL instead of g_direct_equal

[Matthias Clasen <matthiasc src gnome org>]

commit 27db410fd501f8a59c416cbc8fc81eda7771dfd3
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Sep 12 18:48:17 2015 -0400

    Use NULL instead of g_direct_equal
    
    GHashTable has built-in support for pointer comparison.

 gtk/gtkwidget.c |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)
---
diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index 4d714b2..fd17c2e 100644
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -16681,9 +16681,8 @@ get_auto_child_hash (GtkWidget *widget,
 
       widget->priv->auto_children =
        g_hash_table_new_full (g_direct_hash,
-                              g_direct_equal,
-                              NULL,
-                              (GDestroyNotify)g_hash_table_destroy);
+                               NULL,
+                              NULL, (GDestroyNotify)g_hash_table_destroy);
     }
 
   auto_child_hash =