magento-engcom/magento2ce#2476: Fixed code style issue

Author: Stanislav Idolov

app/code/Magento/Wishlist/Controller/Index/Update.php

@@ -6,10 +6,14 @@
 namespace Magento\Wishlist\Controller\Index;
 
 use Magento\Framework\App\Action;
+use Magento\Framework\App\Action\HttpPostActionInterface;
 use Magento\Framework\Exception\NotFoundException;
 use Magento\Framework\Controller\ResultFactory;
 
-class Update extends \Magento\Wishlist\Controller\AbstractIndex
+/**
+ * Class Update
+ */
+class Update extends \Magento\Wishlist\Controller\AbstractIndex implements HttpPostActionInterface
 {
     /**
      * @var \Magento\Wishlist\Controller\WishlistProviderInterface