From 701d8af675989c2d8bb3224ad4382052a467c637 Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Fri, 12 Apr 2019 12:20:42 +0200
Subject: [PATCH] fixed compat with NodeInterface

---
 src/Node/Node.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Node/Node.php b/src/Node/Node.php
index 940cab6a5..5dbe1a5ae 100644
--- a/src/Node/Node.php
+++ b/src/Node/Node.php
@@ -236,7 +236,7 @@ class Node implements \Twig_NodeInterface
     {
         $this->sourceContext = $source;
         foreach ($this->nodes as $node) {
-            if (null !== $node) {
+            if ($node instanceof Node) {
                 $node->setSourceContext($source);
             }
         }