[gnome-shell] Include new GTK+ header for X11 extensions

[Owen Taylor <otaylor src gnome org>]

commit 2bcdae4d5de2489d1940075a1f850353d65abd16
Author: Jonathan Strander <mblackwell1024 gmail com>
Date:   Sun Jan 30 12:28:06 2011 -0600

    Include new GTK+ header for X11 extensions
    
    Due to recent GTK+ changes X11 specific code was moved into different
    headers. As Socket/Plug is X11 only this broke our calls to GtkSocket
    in the tray code. Fix this by including the new gtkx.h header.

 src/tray/na-tray-child.h |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/tray/na-tray-child.h b/src/tray/na-tray-child.h
index 5e4aba8..52b5545 100644
--- a/src/tray/na-tray-child.h
+++ b/src/tray/na-tray-child.h
@@ -24,6 +24,7 @@
 #define __NA_TRAY_CHILD_H__
 
 #include <gtk/gtk.h>
+#include <gtk/gtkx.h>
 #include <gdk/gdkx.h>
 
 G_BEGIN_DECLS