always pass payment_processor_id to Mjwshared.create_payment

CRM/Core/Payment/MJWIPNTrait.php

@@ -264,6 +264,7 @@ trait CRM_Core_Payment_MJWIPNTrait {
         }
       }
       $paymentParams['contribution_id'] = $contribution['id'];
+      $paymentParams['payment_processor_id'] = $this->_paymentProcessor->getID();
       $paymentParams['is_send_contribution_notification'] = $this->getSendEmailReceipt();
       $paymentParams['skipCleanMoney'] = TRUE;
       civicrm_api3('Mjwpayment', 'create_payment', $paymentParams);