Customer model - getPrimaryAddresses without primary billing address - Fix for issue #1096

Author: ihor-sviziev

app/code/Magento/Customer/Model/Customer.php

@@ -719,7 +719,7 @@ public function getPrimaryAddresses()
 
         $primaryShipping = $this->getPrimaryShippingAddress();
         if ($primaryShipping) {
-            if ($primaryBilling->getId() == $primaryShipping->getId()) {
+            if ($primaryBilling && $primaryBilling->getId() == $primaryShipping->getId()) {
                 $primaryBilling->setIsPrimaryShipping(true);
             } else {
                 $primaryShipping->setIsPrimaryShipping(true);