From 57e6536fa4d211024d69d344d0e500fbbf2cc22c Mon Sep 17 00:00:00 2001
From: Matt Brubeck <mbrubeck@mozilla.com>
Date: Wed, 1 Feb 2012 16:20:13 -0800
Subject: [PATCH] Bug 723084 - Remove observers when tabs are destroyed
 [r=bnicholson]

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

diff --git a/mobile/android/chrome/content/browser.js b/mobile/android/chrome/content/browser.js
index 8e111990bf6..5df8947c827 100644
--- a/mobile/android/chrome/content/browser.js
+++ b/mobile/android/chrome/content/browser.js
@@ -1508,6 +1508,8 @@ Tab.prototype = {
     this.browser.removeEventListener("pagehide", this, true);
     this.browser.removeEventListener("pageshow", this, true);
 
+    Services.obs.removeObserver(this, "document-shown");
+
     // Make sure the previously selected panel remains selected. The selected panel of a deck is
     // not stable when panels are removed.
     let selectedPanel = BrowserApp.deck.selectedPanel;