Merge pull request #13397 from pradpnayak/AddressCustomFieldFix

dev/core/issues/636 - Custom field for Address: The "No" value is not defaulted

CRM/Contact/Form/Edit/Address.php

@@ -413,7 +413,7 @@ class CRM_Contact_Form_Edit_Address {
       // since we change element name for address custom data, we need to format the setdefault values
       $addressDefaults = array();
       foreach ($defaults as $key => $val) {
-        if (empty($val)) {
+        if (!isset($val)) {
           continue;
         }