From 5e4160791e3c708091c0de3d54395b8ca72d0cf6 Mon Sep 17 00:00:00 2001
From: Andrea Marchesini <amarchesini@mozilla.com>
Date: Tue, 24 Jan 2017 16:02:15 +0100
Subject: [PATCH] Bug 1333384 - nsTemporaryFileInputStream::ReadSegments must
 consider the stream as closed if PR_Read() return 0, r=bkelly

---
 netwerk/base/nsTemporaryFileInputStream.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/netwerk/base/nsTemporaryFileInputStream.cpp b/netwerk/base/nsTemporaryFileInputStream.cpp
index 56a32bb57047..c7c5b0648669 100644
--- a/netwerk/base/nsTemporaryFileInputStream.cpp
+++ b/netwerk/base/nsTemporaryFileInputStream.cpp
@@ -84,6 +84,11 @@ nsTemporaryFileInputStream::ReadSegments(nsWriteSegmentFun writer,
   while (*result < count) {
     uint32_t bufCount = std::min(count - *result, (uint32_t) sizeof(buf));
     int32_t bytesRead = PR_Read(mFileDescOwner->mFD, buf, bufCount);
+    if (bytesRead == 0) {
+      mClosed = true;
+      return NS_OK;
+    }
+
     if (bytesRead < 0) {
       return NS_ErrorAccordingToNSPR();
     }