From 2001e54e8223d6263313c7adc8554547a4f320b8 Mon Sep 17 00:00:00 2001
From: Sjoerd Adema <s.j.adema@iwink.nl>
Date: Tue, 21 Jan 2020 17:49:30 +0100
Subject: [PATCH] [HttpKernel] Check if lock can be released

Make sure the `$cache->release()` method exists before executing it.
---
 src/Symfony/Component/HttpKernel/Kernel.php | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index 434e6b55ba..7650257963 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -634,7 +634,10 @@ abstract class Kernel implements KernelInterface, RebootableInterface, Terminabl
         }
 
         $this->dumpContainer($cache, $container, $class, $this->getContainerBaseClass());
-        $cache->release();
+        if (method_exists($cache, 'release')) {
+            $cache->release();
+        }
+
         $this->container = require $cachePath;
         $this->container->set('kernel', $this);