Fix undefined index notices in merge

diff --git a/CRM/Dedupe/Merger.php b/CRM/Dedupe/Merger.php
index ed55c653fc5ddbca24c1df9728ede059ac96bd6f..a286b2115f918c3949a791f4c6649fde5d291f0f 100644 (file)
--- a/CRM/Dedupe/Merger.php
+++ b/CRM/Dedupe/Merger.php
@@ -963,7 +963,7 @@ INNER JOIN  civicrm_membership membership2 ON membership1.membership_type_id = m
       if (in_array($field, $keysToIgnore)) {
         continue;
       }
-      if (!empty($value) && $mainAddress[$field] != $value) {
+      if (!empty($value) && isset($mainAddress[$field]) && $mainAddress[$field] != $value) {
         return FALSE;
       }
     }