From 713b99fc8f0871f0ed81e809ddcb9e9110170092 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Diego=20Agull=C3=B3?= <aeoris@gmail.com>
Date: Sun, 1 Nov 2015 23:24:34 +0100
Subject: [PATCH] Check whether $this->logger is not null on
 GuardAuthenticationListener

---
 .../Guard/Firewall/GuardAuthenticationListener.php         | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Component/Security/Guard/Firewall/GuardAuthenticationListener.php b/src/Symfony/Component/Security/Guard/Firewall/GuardAuthenticationListener.php
index 0ac7c12fef..1a659fc1a2 100644
--- a/src/Symfony/Component/Security/Guard/Firewall/GuardAuthenticationListener.php
+++ b/src/Symfony/Component/Security/Guard/Firewall/GuardAuthenticationListener.php
@@ -77,7 +77,12 @@ class GuardAuthenticationListener implements ListenerInterface
             $this->executeGuardAuthenticator($uniqueGuardKey, $guardAuthenticator, $event);
 
             if ($event->hasResponse()) {
-                $this->logger->debug(sprintf('The "%s" authenticator set the response. Any later authenticator will not be called', get_class($guardAuthenticator)));
+                if (null !== $this->logger) {
+                    $this->logger->debug(sprintf(
+                        'The "%s" authenticator set the response. Any later authenticator will not be called',
+                        get_class($guardAuthenticator)
+                    ));
+                }
 
                 break;
             }