From 444fb073607922eec6f08f704f057d9319df164c Mon Sep 17 00:00:00 2001
From: Nathan Froyd <froydnj@mozilla.com>
Date: Mon, 7 Sep 2015 20:02:16 -0400
Subject: [PATCH] Bug 1202667 - make TaskQueue task running slightly more
 efficient; r=mccr8

We can transfer the reference out of the queue of runnables instead of
taking a new reference right before we drop the old one.
---
 xpcom/threads/TaskQueue.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xpcom/threads/TaskQueue.cpp b/xpcom/threads/TaskQueue.cpp
index db7edaecbdb1..33b7998beca4 100644
--- a/xpcom/threads/TaskQueue.cpp
+++ b/xpcom/threads/TaskQueue.cpp
@@ -155,7 +155,7 @@ TaskQueue::Runner::Run()
       mon.NotifyAll();
       return NS_OK;
     }
-    event = mQueue->mTasks.front();
+    event = mQueue->mTasks.front().forget();
     mQueue->mTasks.pop();
   }
   MOZ_ASSERT(event);