[empathy] Fix breakage introduced in previous commit with Cheese enabled

[Emanuele Aina <emaaa src gnome org>]

commit a53e07b1c85f2ea24a0ee3adb43a6e400c1c4ccc
Author: Emanuele Aina <emanuele aina collabora com>
Date:   Fri Mar 29 14:01:18 2013 +0100

    Fix breakage introduced in previous commit with Cheese enabled
    
    Oops. I failed to test commit 66e393b7 with the Cheese support enabled
    and I deleted an header too much.

 libempathy-gtk/empathy-avatar-chooser.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/libempathy-gtk/empathy-avatar-chooser.c b/libempathy-gtk/empathy-avatar-chooser.c
index 0a4517d..553dd4f 100644
--- a/libempathy-gtk/empathy-avatar-chooser.c
+++ b/libempathy-gtk/empathy-avatar-chooser.c
@@ -24,6 +24,7 @@
 
 #include <glib/gi18n-lib.h>
 
+#include <libempathy/empathy-camera-monitor.h>
 #include <libempathy/empathy-gsettings.h>
 #include <libempathy/empathy-utils.h>