From 3a64d3cac7bd7a8a58badd0883c300d8234a8e53 Mon Sep 17 00:00:00 2001
From: eduard13 <e.chitoraga@atwix.com>
Date: Mon, 25 Jun 2018 21:01:30 +0300
Subject: [PATCH] Fixes updating wishlist item if an item object is passed
 instead its id.

---
 app/code/Magento/Wishlist/Model/Wishlist.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/app/code/Magento/Wishlist/Model/Wishlist.php b/app/code/Magento/Wishlist/Model/Wishlist.php
index 9eb4e1f5ebcd2..d6284f32c4f5e 100644
--- a/app/code/Magento/Wishlist/Model/Wishlist.php
+++ b/app/code/Magento/Wishlist/Model/Wishlist.php
@@ -3,6 +3,8 @@
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
+declare(strict_types=1);
+
 namespace Magento\Wishlist\Model;
 
 use Magento\Catalog\Api\ProductRepositoryInterface;
@@ -637,6 +639,7 @@ public function updateItem($itemId, $buyRequest, $params = null)
         $item = null;
         if ($itemId instanceof Item) {
             $item = $itemId;
+            $itemId = $item->getId();
         } else {
             $item = $this->getItem((int)$itemId);
         }