use InvoiceInterface instead of Invoice model to check if an invoice is set on the credit memo

Anton Evers · web-flow · commit 1d341efa8875 · 2017-11-14T09:22:10.000+01:00
diff --git a/app/code/Magento/Sales/Model/Order/Creditmemo.php b/app/code/Magento/Sales/Model/Order/Creditmemo.php
@@ -389,7 +389,7 @@ public function canRefund()
      */
     public function getInvoice()
     {
-        if (!$this->getData('invoice') instanceof \Magento\Sales\Model\Order\Invoice && $this->getInvoiceId()) {
+        if (!$this->getData('invoice') instanceof \Magento\Sales\Api\Data\InvoiceInterface && $this->getInvoiceId()) {
             $this->setInvoice($this->invoiceFactory->create()->load($this->getInvoiceId()));
         }
         return $this->getData('invoice');

Original file line number	Diff line number	Diff line change
`@@ -389,7 +389,7 @@ public function canRefund()`
`389`	`389`	`*/`
`390`	`390`	`public function getInvoice()`
`391`	`391`	`{`
`392`		`- if (!$this->getData('invoice') instanceof \Magento\Sales\Model\Order\Invoice && $this->getInvoiceId()) {`
	`392`	`+ if (!$this->getData('invoice') instanceof \Magento\Sales\Api\Data\InvoiceInterface && $this->getInvoiceId()) {`
`393`	`393`	`$this->setInvoice($this->invoiceFactory->create()->load($this->getInvoiceId()));`
`394`	`394`	`}`
`395`	`395`	`return $this->getData('invoice');`