[evolution-kolab] EPlugin: added forgotten header include

[Christian Hilberg <chilberg src gnome org>]

commit dccee7cde1415678ab35b40385892f1200184b2d
Author: Christian Hilberg <hilberg kernelconcepts de>
Date:   Tue Oct 9 20:04:30 2012 +0200

    EPlugin: added forgotten header include

 src/eplugin/e-kolab-folder-metadata.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/eplugin/e-kolab-folder-metadata.c b/src/eplugin/e-kolab-folder-metadata.c
index a634466..835275b 100644
--- a/src/eplugin/e-kolab-folder-metadata.c
+++ b/src/eplugin/e-kolab-folder-metadata.c
@@ -32,7 +32,9 @@
 #include <glib-object.h>
 
 #include <libekolab/camel-kolab-imapx-store.h>
+
 #include <libekolabutil/kolab-util-error.h>
+#include <libekolabutil/kolab-util-folder.h>
 
 #include "e-kolab-plugin-util.h"
 #include "e-kolab-folder-metadata.h"