From 16eea3c45af4f190274b0f0a955f76a01da0bdf7 Mon Sep 17 00:00:00 2001
From: Kris Maglione <maglione.k@gmail.com>
Date: Wed, 14 Sep 2011 10:44:28 -0400
Subject: [PATCH] Fix typo.

---
 common/modules/util.jsm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/common/modules/util.jsm b/common/modules/util.jsm
index cf2e59d3..07027705 100644
--- a/common/modules/util.jsm
+++ b/common/modules/util.jsm
@@ -132,7 +132,7 @@ var Util = Module("Util", XPCOM([Ci.nsIObserver, Ci.nsISupportsWeakReference]),
         Class.replaceProperty(obj, "observe",
             function (subject, target, data) {
                 try {
-                    if (!cleanup.indexOf(target))
+                    if (~cleanup.indexOf(target))
                         register("removeObserver");
                     if (obj.observers[target])
                         obj.observers[target].call(obj, subject, data);