From b6c29a054b0d422167d1012e99491c6c5b6bbd63 Mon Sep 17 00:00:00 2001
From: Ralf Becker <RalfBecker@outdoor-training.de>
Date: Wed, 7 Dec 2016 14:16:52 +0100
Subject: [PATCH] fix PHP Warning (Invalid argument supplied for foreach() in
 calendar/inc/class.calendar_boupdate.inc.php on line 1915), if moved event
 has no alarms

---
 calendar/inc/class.calendar_so.inc.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/calendar/inc/class.calendar_so.inc.php b/calendar/inc/class.calendar_so.inc.php
index bbd41c16d5..b18dd5f26f 100644
--- a/calendar/inc/class.calendar_so.inc.php
+++ b/calendar/inc/class.calendar_so.inc.php
@@ -2328,7 +2328,7 @@ ORDER BY cal_user_type, cal_usre_id
 			}
 		}
 		//error_log(__METHOD__."(".array2string($cal_id).") returning ".array2string($alarms));
-		return $alarms;
+		return $alarms ? $alarms : array();
 	}
 
 	/**