From 62be45e882b3ff24a8a60fa4a1cefa83b5d5f227 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <machniak@kolabsys.com>
Date: Fri, 17 Nov 2023 14:56:38 +0100
Subject: [PATCH] Fix PHP8 warning

---
 plugins/libcalendaring/lib/libcalendaring_itip.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugins/libcalendaring/lib/libcalendaring_itip.php b/plugins/libcalendaring/lib/libcalendaring_itip.php
index e2f737dd..d1508157 100644
--- a/plugins/libcalendaring/lib/libcalendaring_itip.php
+++ b/plugins/libcalendaring/lib/libcalendaring_itip.php
@@ -261,7 +261,7 @@ class libcalendaring_itip
             }
         }
         else if ($method == 'CANCEL') {
-            if ($event['recurrence']) {
+            if (!empty($event['recurrence'])) {
                 unset($event['recurrence']['EXCEPTIONS']);
             }
         }