From 3cb082effdf6a439de995c8ac8623218e7e4a2bd Mon Sep 17 00:00:00 2001
From: Margaret Leibovic <margaret.leibovic@gmail.com>
Date: Fri, 15 Jun 2012 15:58:36 -0700
Subject: [PATCH] Bug 765372 - Add some null safety to isElementClickable.
 r=wesj

---
 mobile/android/chrome/content/browser.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mobile/android/chrome/content/browser.js b/mobile/android/chrome/content/browser.js
index c5da70afa158..45dad99fa359 100644
--- a/mobile/android/chrome/content/browser.js
+++ b/mobile/android/chrome/content/browser.js
@@ -3342,7 +3342,7 @@ const ElementTouchHelper = {
     if (!aAllowBodyListeners && aElement && aElement.ownerDocument)
       stopNode = aElement.ownerDocument.body;
 
-    for (let elem = aElement; elem != stopNode; elem = elem.parentNode) {
+    for (let elem = aElement; elem && elem != stopNode; elem = elem.parentNode) {
       if (aUnclickableCache && aUnclickableCache.indexOf(elem) != -1)
         continue;
       if (this._hasMouseListener(elem))