[mutter] po: Add missing file

[Florian Müllner <fmuellner src gnome org>]

commit b09f47d17f270fbe0fb53744618386dde44fede5
Author: Florian Müllner <fmuellner gnome org>
Date:   Wed Feb 20 16:44:17 2013 +0100

    po: Add missing file

 po/POTFILES.in |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index c448f63..1e1b5a2 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -4,6 +4,7 @@ src/50-mutter-navigation.xml.in
 src/50-mutter-system.xml.in
 src/50-mutter-windows.xml.in
 src/compositor/compositor.c
+src/compositor/meta-background.c
 src/core/bell.c
 src/core/core.c
 src/core/delete.c