[gnome-desktop] idle-monitor: Add missing GDK include

[Bastien Nocera <hadess src gnome org>]

commit a3c6883777c13886cd9eb408d04b88d96c97260f
Author: Bastien Nocera <hadess hadess net>
Date:   Wed Nov 21 22:17:34 2012 +0100

    idle-monitor: Add missing GDK include

 libgnome-desktop/gnome-idle-monitor.h |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/libgnome-desktop/gnome-idle-monitor.h b/libgnome-desktop/gnome-idle-monitor.h
index 534ae20..7cd0e22 100644
--- a/libgnome-desktop/gnome-idle-monitor.h
+++ b/libgnome-desktop/gnome-idle-monitor.h
@@ -29,6 +29,7 @@
 #endif
 
 #include <glib-object.h>
+#include <gdk/gdk.h>
 
 G_BEGIN_DECLS