From 0f00a12eff978ae7c626d1f1fedf0eba4ac154fd Mon Sep 17 00:00:00 2001
From: Dan Mosedale <dmose@meer.net>
Date: Thu, 29 May 2014 21:13:49 +0100
Subject: [PATCH] No bug - Bandaid to make registration work right; real fix
 coming in bug 1017394, rs=Standard8

---
 browser/components/loop/MozLoopService.jsm | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/browser/components/loop/MozLoopService.jsm b/browser/components/loop/MozLoopService.jsm
index 1655acaac3d..9783f8dda2a 100644
--- a/browser/components/loop/MozLoopService.jsm
+++ b/browser/components/loop/MozLoopService.jsm
@@ -259,7 +259,9 @@ let MozLoopServiceInternal = {
     }
 
     // We need to register, so save the callback.
-    this.registrationCallbacks.push(callback);
+    if (callback) {
+      this.registrationCallbacks.push(callback);
+    }
 
     // If we're already in progress, just return straight away.
     if (this.registrationInProgress) {