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From 72cd6e97ae12b89659cd59788bad08cd2f514eff Mon Sep 17 00:00:00 2001
From: Andrea Marchesini <amarchesini@mozilla.com>
Date: Fri, 12 Jun 2015 10:06:19 -0400
Subject: [PATCH] Bug 1169867 - XMLHttpRequest::SendInternal should not unpin
 itself when the worker goes away. r=bent, a=abillings

--HG--
extra : transplant_source : %28%B3%BD%9D%E2p%F3%BE%94S%CCD%08%8B%07%8A%CC%17%B0%7B
---
 dom/workers/XMLHttpRequest.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/dom/workers/XMLHttpRequest.cpp b/dom/workers/XMLHttpRequest.cpp
index 5690af5..d425eac 100644
--- a/dom/workers/XMLHttpRequest.cpp
+++ b/dom/workers/XMLHttpRequest.cpp
@@ -1829,6 +1829,11 @@ XMLHttpRequest::SendInternal(const nsAString& aStringBody,
     new SendRunnable(mWorkerPrivate, mProxy, aStringBody, Move(aBody),
                      aClonedObjects, syncLoopTarget, hasUploadListeners);
   if (!runnable->Dispatch(cx)) {
+    // Dispatch() may have spun the event loop and we may have already unrooted.
+    // If so we don't want autoUnpin to try again.
+    if (!mRooted) {
+      autoUnpin.Clear();
+    }
     aRv.Throw(NS_ERROR_FAILURE);
     return;
   }
-- 
2.4.3