Bug 1264566 - Part 3: Release upload stream after request complete. r=valentin

MozReview-Commit-ID: 5r1fEkOy9vU

--HG--
extra : transplant_source : %1Dc6%99%3F%5C%81%F6%FDu%FD%C0l%B8-%CD%AF%BBx%01
extra : histedit_source : b407a427fa4cd3fedfd71f7d7f56958fce1099ca

netwerk/protocol/http/HttpChannelChild.cpp

@@ -864,6 +864,8 @@ HttpChannelChild::OnStopRequest(const nsresult& channelStatus,
   LOG(("HttpChannelChild::OnStopRequest [this=%p status=%x]\n",
        this, channelStatus));
 
+  mUploadStream = nullptr;
+
   if (mDivertingToParent) {
     MOZ_RELEASE_ASSERT(!mFlushedForDiversion,
       "Should not be processing any more callbacks from parent!");

netwerk/protocol/http/nsHttpChannel.cpp

@@ -6341,6 +6341,8 @@ nsHttpChannel::OnStopRequest(nsIRequest *request, nsISupports *ctxt, nsresult st
     MOZ_ASSERT(NS_IsMainThread(),
                "OnStopRequest should only be called from the main thread");
 
+    mUploadStream = nullptr;
+
     if (NS_FAILED(status)) {
         ProcessSecurityReport(status);
     }