From 0ae9f4508c83b642507240707cc8d222fc4e00e9 Mon Sep 17 00:00:00 2001
From: "Olli.Pettay%helsinki.fi"
 <Olli.Pettay%helsinki.fi@18797224-902f-48f8-a5cc-f745e15eee43>
Date: Sun, 28 Dec 2008 19:46:17 +0000
Subject: [PATCH]  Bug 470419, r+sr=bz, a=dveditz

git-svn-id: svn://10.0.0.236/trunk@255654 18797224-902f-48f8-a5cc-f745e15eee43
---
 mozilla/content/xbl/src/nsXBLEventHandler.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mozilla/content/xbl/src/nsXBLEventHandler.cpp b/mozilla/content/xbl/src/nsXBLEventHandler.cpp
index b85be41cb8a..46df94f972d 100644
--- a/mozilla/content/xbl/src/nsXBLEventHandler.cpp
+++ b/mozilla/content/xbl/src/nsXBLEventHandler.cpp
@@ -103,7 +103,7 @@ PRBool
 nsXBLMouseEventHandler::EventMatched(nsIDOMEvent* aEvent)
 {
   nsCOMPtr<nsIDOMMouseEvent> mouse(do_QueryInterface(aEvent));
-  return mProtoHandler->MouseEventMatched(mouse);
+  return mouse && mProtoHandler->MouseEventMatched(mouse);
 }
 
 nsXBLKeyEventHandler::nsXBLKeyEventHandler(nsIAtom* aEventType, PRUint8 aPhase,