[gthumb] removed use of deprecated gdk_window_set_user_data

[Paolo Bacchilega <paobac src gnome org>]

commit 319004b8356702fb35e71a5c59991bc9aeeb492e
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Wed Oct 30 22:09:03 2013 +0100

    removed use of deprecated gdk_window_set_user_data

 gthumb/gth-empty-list.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gthumb/gth-empty-list.c b/gthumb/gth-empty-list.c
index 46c86cf..833de55 100644
--- a/gthumb/gth-empty-list.c
+++ b/gthumb/gth-empty-list.c
@@ -130,8 +130,8 @@ gth_empty_list_realize (GtkWidget *widget)
        window = gdk_window_new (gtk_widget_get_parent_window (widget),
                                 &attributes,
                                 attributes_mask);
+       gtk_widget_register_window (widget, window);
        gtk_widget_set_window (widget, window);
-       gdk_window_set_user_data (window, widget);
 
        /* Style */