bugfix email list

app/UI/Client/DistributionList/Providers/EditListDataProvider.php

@@ -162,7 +162,9 @@ class EditListDataProvider extends AddListDataProvider
             'ThisList' => $lang->absoluteT('ThisList'),
             'SenderThisList' => $lang->absoluteT('SenderThisList')
         ];
-
+        // prevent in_array on null in update
+        $this->data['memberList'] ? $this->data['memberList'] : $this->data['memberList'] = array();
+        $this->data['memberListActually'] ? $this->data['memberListActually'] : $this->data['memberListActually'] = array();
         foreach($intMembers as $intMember) {
             $this->data['memberList'][] = $intMember;
         }