From f5f5ba1f2c6226d4a2588a19a4bbfca9a7da5048 Mon Sep 17 00:00:00 2001
From: Kyle Huey <khuey@kylehuey.com>
Date: Mon, 14 May 2012 11:29:41 -0700
Subject: [PATCH] Bug 725499. r=bent

---
 dom/workers/WorkerPrivate.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/dom/workers/WorkerPrivate.cpp b/dom/workers/WorkerPrivate.cpp
index d8f7c9f9822..d8adfc64ff4 100644
--- a/dom/workers/WorkerPrivate.cpp
+++ b/dom/workers/WorkerPrivate.cpp
@@ -1759,11 +1759,14 @@ WorkerRunnable::Run()
   JSObject* targetCompartmentObject;
   nsIThreadJSContextStack* contextStack = nsnull;
 
+  nsRefPtr<WorkerPrivate> kungFuDeathGrip;
+
   if (mTarget == WorkerThread) {
     mWorkerPrivate->AssertIsOnWorkerThread();
     cx = mWorkerPrivate->GetJSContext();
     targetCompartmentObject = JS_GetGlobalObject(cx);
   } else {
+    kungFuDeathGrip = mWorkerPrivate;
     mWorkerPrivate->AssertIsOnParentThread();
     cx = mWorkerPrivate->ParentJSContext();
     targetCompartmentObject = mWorkerPrivate->GetJSObject();