[gtk+] Don't leak a ref to the tooltip window

[Matthias Clasen <matthiasc src gnome org>]

commit 92ddf14457d0fef9098efb2105a9ee43c77f4e5a
Author: William Jon McCann <jmccann redhat com>
Date:   Wed Sep 12 16:43:32 2012 -0400

    Don't leak a ref to the tooltip window
    
    https://bugzilla.gnome.org/show_bug.cgi?id=683896

 gtk/gtktooltip.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtktooltip.c b/gtk/gtktooltip.c
index eaf94b8..b4e0c95 100644
--- a/gtk/gtktooltip.c
+++ b/gtk/gtktooltip.c
@@ -206,7 +206,7 @@ gtk_tooltip_init (GtkTooltip *tooltip)
 
   tooltip->last_window = NULL;
 
-  window = g_object_ref (gtk_window_new (GTK_WINDOW_POPUP));
+  window = gtk_window_new (GTK_WINDOW_POPUP);
   screen = gtk_widget_get_screen (window);
   visual = gdk_screen_get_rgba_visual (screen);