From 6ad5511c1e3b068db689ce3634a64cf16a821d0c Mon Sep 17 00:00:00 2001
From: Florian Schlichting <fsfs@debian.org>
Date: Tue, 3 Oct 2017 22:36:07 +0200
Subject: [PATCH] fix "PHP Notice: Undefined property" warnings

---
 inc/caldav-POST.php          | 2 +-
 inc/caldav-PUT-functions.php | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/inc/caldav-POST.php b/inc/caldav-POST.php
index 88df1286..bcb6266f 100644
--- a/inc/caldav-POST.php
+++ b/inc/caldav-POST.php
@@ -50,7 +50,7 @@ function handle_freebusy_request( $ic ) {
   }
   dbg_error_log( "POST", "Responding with free/busy for %d attendees", count($attendees) );
 
-  if ($c->enable_attendee_group_resolution) {
+  if (isset($c->enable_attendee_group_resolution) && $c->enable_attendee_group_resolution) {
     $new_attendees = array();
     foreach( $attendees AS $attendee ) {
       $v = $attendee->Value();
diff --git a/inc/caldav-PUT-functions.php b/inc/caldav-PUT-functions.php
index c5453a98..f9c10ea1 100644
--- a/inc/caldav-PUT-functions.php
+++ b/inc/caldav-PUT-functions.php
@@ -510,7 +510,7 @@ function do_scheduling_requests( vCalendar $resource, $create, $old_data = null
     return do_scheduling_reply($resource,$organizer);
   }
 
-  if ($c->enable_attendee_group_resolution) {
+  if (isset($c->enable_attendee_group_resolution) && $c->enable_attendee_group_resolution) {
     $mail_domain = preg_replace( '/^.*@/i', '', $c->admin_email );
     $attendees = $resource->GetAttendees();
     $new_attendees = array();