[gnome-control-center] background: Add missing include

[Rico Tzschichholz <ricotz src gnome org>]

commit ddf8c56caf3ba9bb68884840c398e6485c107cfd
Author: Rico Tzschichholz <ricotz t-online de>
Date:   Wed Aug 22 12:52:29 2012 +0200

    background: Add missing include
    
    bg_pictures_source_get_*_path is defined in bg-pictures-source.h

 panels/background/cc-background-panel.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/panels/background/cc-background-panel.c b/panels/background/cc-background-panel.c
index 206b94d..e861b67 100644
--- a/panels/background/cc-background-panel.c
+++ b/panels/background/cc-background-panel.c
@@ -35,6 +35,8 @@
 
 #include "cc-background-chooser-dialog.h"
 
+#include "bg-pictures-source.h"
+
 #define WP_PATH_ID "org.gnome.desktop.background"
 #define WP_URI_KEY "picture-uri"
 #define WP_OPTIONS_KEY "picture-options"