From a5342d2eb180c092bf4f14b4c1ecb4a252ccb8ce Mon Sep 17 00:00:00 2001
From: Klaus Leithoff <kl@stylite.de>
Date: Mon, 4 Oct 2010 10:07:52 +0000
Subject: [PATCH] calendar: handle catchable fatal error while trying to build
 rule

---
 calendar/inc/class.calendar_bo.inc.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/calendar/inc/class.calendar_bo.inc.php b/calendar/inc/class.calendar_bo.inc.php
index 5914b0ac9c..d7e4919f5a 100644
--- a/calendar/inc/class.calendar_bo.inc.php
+++ b/calendar/inc/class.calendar_bo.inc.php
@@ -1584,6 +1584,7 @@ class calendar_bo
 	 */
 	function recure2string($event)
 	{
+		if (!is_array($event)) return false;
 		return (string)calendar_rrule::event2rrule($event);
 	}