[gnome-builder/wip/chergert/perspective] egg: handle toplevel not being a window

[Christian Hergert <chergert src gnome org>]

commit 3a145a60b5f20ea76a9a693f0bdf9cdd84bf7b5c
Author: Christian Hergert <chergert redhat com>
Date:   Fri Nov 6 19:16:40 2015 -0800

    egg: handle toplevel not being a window

 contrib/egg/egg-centering-bin.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/contrib/egg/egg-centering-bin.c b/contrib/egg/egg-centering-bin.c
index a65d4c8..0b7cc15 100644
--- a/contrib/egg/egg-centering-bin.c
+++ b/contrib/egg/egg-centering-bin.c
@@ -132,8 +132,11 @@ egg_centering_bin_hierarchy_changed (GtkWidget *widget,
    */
 
   toplevel = gtk_widget_get_toplevel (widget);
-  if ((toplevel == NULL) || GTK_IS_WINDOW (toplevel))
+
+  if (GTK_IS_WINDOW (toplevel))
     egg_signal_group_set_target (priv->signals, toplevel);
+  else
+    egg_signal_group_set_target (priv->signals, NULL);
 }
 
 static void