From 8d9c7bc2c5c6870e175d263d17fb5b08382ae6f7 Mon Sep 17 00:00:00 2001
From: Ehsan Akhgari <ehsan@mozilla.com>
Date: Sun, 20 Oct 2019 19:29:06 +0000
Subject: [PATCH] Bug 1589953 - Initialize `read` in
 AlternativeDataStreamListener::OnDataAvailable(); r=edgar

Differential Revision: https://phabricator.services.mozilla.com/D49849

--HG--
extra : moz-landing-system : lando
---
 dom/fetch/FetchDriver.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dom/fetch/FetchDriver.cpp b/dom/fetch/FetchDriver.cpp
index 21942ef95e98..1af22a11a646 100644
--- a/dom/fetch/FetchDriver.cpp
+++ b/dom/fetch/FetchDriver.cpp
@@ -261,7 +261,7 @@ AlternativeDataStreamListener::OnDataAvailable(nsIRequest* aRequest,
                                                uint32_t aCount) {
   if (mStatus == AlternativeDataStreamListener::LOADING) {
     MOZ_ASSERT(mPipeAlternativeOutputStream);
-    uint32_t read;
+    uint32_t read = 0;
     return aInputStream->ReadSegments(
         NS_CopySegmentToStream, mPipeAlternativeOutputStream, aCount, &read);
   }