From ec59953f4cb34c15cac4d98f587094556860847c Mon Sep 17 00:00:00 2001
From: Tobias Schultze <webmaster@tubo-world.de>
Date: Thu, 17 Sep 2015 03:14:14 +0200
Subject: [PATCH] [EventDispatcher] fix memory leak in a getListeners

---
 .../Component/EventDispatcher/EventDispatcher.php      | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/Symfony/Component/EventDispatcher/EventDispatcher.php b/src/Symfony/Component/EventDispatcher/EventDispatcher.php
index a2435e9978..67097e5662 100644
--- a/src/Symfony/Component/EventDispatcher/EventDispatcher.php
+++ b/src/Symfony/Component/EventDispatcher/EventDispatcher.php
@@ -61,6 +61,10 @@ class EventDispatcher implements EventDispatcherInterface
     public function getListeners($eventName = null)
     {
         if (null !== $eventName) {
+            if (!isset($this->listeners[$eventName])) {
+                return array();
+            }
+
             if (!isset($this->sorted[$eventName])) {
                 $this->sortListeners($eventName);
             }
@@ -177,9 +181,7 @@ class EventDispatcher implements EventDispatcherInterface
     {
         $this->sorted[$eventName] = array();
 
-        if (isset($this->listeners[$eventName])) {
-            krsort($this->listeners[$eventName]);
-            $this->sorted[$eventName] = call_user_func_array('array_merge', $this->listeners[$eventName]);
-        }
+        krsort($this->listeners[$eventName]);
+        $this->sorted[$eventName] = call_user_func_array('array_merge', $this->listeners[$eventName]);
     }
 }