[gtk+] Fix a compiler warning

[Matthias Clasen <matthiasc src gnome org>]

commit cea4b80096526a6e878e0752ea302e73f32b0551
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Jun 23 13:07:47 2012 -0400

    Fix a compiler warning
    
    This was introduced in the previous commit.

 gtk/gtknotebook.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtknotebook.c b/gtk/gtknotebook.c
index cf077c8..54c079d 100644
--- a/gtk/gtknotebook.c
+++ b/gtk/gtknotebook.c
@@ -4149,7 +4149,7 @@ focus_tabs_in (GtkNotebook *notebook)
   if (priv->show_tabs && priv->cur_page)
     {
       gtk_widget_grab_focus (GTK_WIDGET (notebook));
-      gtk_notebook_set_focus_child (notebook, NULL);
+      gtk_notebook_set_focus_child (GTK_CONTAINER (notebook), NULL);
       gtk_notebook_switch_focus_tab (notebook,
                                      g_list_find (priv->children,
                                                   priv->cur_page));