[gnome-control-center] common: Fix list-languages build

[Bastien Nocera <hadess src gnome org>]

commit 2a24b5978e51bfcc5e9431a319ae481eac830a73
Author: Bastien Nocera <hadess hadess net>
Date:   Mon Oct 1 09:32:18 2012 +0200

    common: Fix list-languages build

 panels/common/list-languages.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/panels/common/list-languages.c b/panels/common/list-languages.c
index 6562327..c65e889 100644
--- a/panels/common/list-languages.c
+++ b/panels/common/list-languages.c
@@ -2,6 +2,7 @@
 
 #include <glib.h>
 #include <glib/gi18n.h>
+#include <locale.h>
 #include <glib-object.h>
 #include "gdm-languages.h"