From a5f05a04864f67f6738ef83d734039a7b85cc5ac Mon Sep 17 00:00:00 2001
From: "changmin.keum" <changmin.keum@rakuten.com>
Date: Thu, 15 Feb 2018 14:08:21 +0900
Subject: [PATCH] [DI] Add null check for removeChild

---
 .../Component/DependencyInjection/Loader/XmlFileLoader.php    | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php b/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php
index 93ca3c669b..abf91b181c 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php
@@ -324,7 +324,9 @@ class XmlFileLoader extends FileLoader
                 $domElement->parentNode->replaceChild($tmpDomElement, $domElement);
                 $tmpDomElement->setAttribute('id', $id);
             } else {
-                $domElement->parentNode->removeChild($domElement);
+                if (null !== $domElement->parentNode) {
+                    $domElement->parentNode->removeChild($domElement);
+                }
             }
         }
     }