From bcd9b52694ad168f16880c6ff6ffda8b952af993 Mon Sep 17 00:00:00 2001
From: Olli Pettay <Olli.Pettay@helsinki.fi>
Date: Wed, 4 Dec 2013 20:17:53 +0200
Subject: [PATCH] Bug 946206 - crash in
 nsDOMEventTargetHelper::EventListenerRemoved, r=mccr8

--HG--
extra : rebase_source : e0fc56535494b7a9773ece721d98aa2fb0cad6b9
---
 content/events/src/nsEventListenerManager.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/content/events/src/nsEventListenerManager.cpp b/content/events/src/nsEventListenerManager.cpp
index 54ef021e7f9..928b3760a2e 100644
--- a/content/events/src/nsEventListenerManager.cpp
+++ b/content/events/src/nsEventListenerManager.cpp
@@ -759,7 +759,7 @@ nsEventListenerManager::RemoveEventHandler(nsIAtom* aName,
     mListeners.RemoveElementAt(uint32_t(ls - &mListeners.ElementAt(0)));
     mNoListenerForEvent = NS_EVENT_NULL;
     mNoListenerForEventAtom = nullptr;
-    if (mTarget) {
+    if (mTarget && aName) {
       mTarget->EventListenerRemoved(aName);
     }
   }