From 2070015cd24c4d1566cfe7427a1f4e9fc96d3037 Mon Sep 17 00:00:00 2001
From: Patrick McManus <mcmanus@ducksong.com>
Date: Fri, 5 Feb 2016 12:25:20 -0500
Subject: [PATCH] Bug 598790 - nullcheck canceled channel in
 prefetchnode::onstoprequest r=bz

---
 uriloader/prefetch/nsPrefetchService.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/uriloader/prefetch/nsPrefetchService.cpp b/uriloader/prefetch/nsPrefetchService.cpp
index c1b56c8e691..8d457bb0482 100644
--- a/uriloader/prefetch/nsPrefetchService.cpp
+++ b/uriloader/prefetch/nsPrefetchService.cpp
@@ -217,7 +217,7 @@ nsPrefetchNode::OnStopRequest(nsIRequest *aRequest,
 {
     LOG(("done prefetching [status=%x]\n", aStatus));
 
-    if (mBytesRead == 0 && aStatus == NS_OK) {
+    if (mBytesRead == 0 && aStatus == NS_OK && mChannel) {
         // we didn't need to read (because LOAD_ONLY_IF_MODIFIED was
         // specified), but the object should report loadedSize as if it
         // did.