[gnome-panel] panel: Fix warning

[Vincent Untz <vuntz src gnome org>]

commit e5a7947b25ae2c0aee0fca0c4734db790b978acc
Author: Vincent Untz <vuntz gnome org>
Date:   Tue Feb 22 16:30:24 2011 +0100

    panel: Fix warning

 gnome-panel/panel-applet-frame.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gnome-panel/panel-applet-frame.c b/gnome-panel/panel-applet-frame.c
index 8fb803c..7452542 100644
--- a/gnome-panel/panel-applet-frame.c
+++ b/gnome-panel/panel-applet-frame.c
@@ -824,7 +824,7 @@ panel_applet_frame_activating_free (PanelAppletFrameActivating *frame_act)
 GdkScreen *
 panel_applet_frame_activating_get_screen (PanelAppletFrameActivating *frame_act)
 {
-	return gtk_widget_get_screen (frame_act->panel);
+	return gtk_widget_get_screen (GTK_WIDGET (frame_act->panel));
 }
 
 PanelOrientation