From 0f6016a854d57af7a8b62e3ac6a331e928cd6459 Mon Sep 17 00:00:00 2001
From: Muxi Yan <mxyan@google.com>
Date: Mon, 11 Jun 2018 14:24:25 -0700
Subject: [PATCH] bug - Fix #15679

---
 src/core/lib/iomgr/cfstream_handle.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/core/lib/iomgr/cfstream_handle.cc b/src/core/lib/iomgr/cfstream_handle.cc
index 30f4e656324..827fd24831e 100644
--- a/src/core/lib/iomgr/cfstream_handle.cc
+++ b/src/core/lib/iomgr/cfstream_handle.cc
@@ -116,7 +116,9 @@ CFStreamHandle::CFStreamHandle(CFReadStreamRef read_stream,
   open_event_.InitEvent();
   read_event_.InitEvent();
   write_event_.InitEvent();
-  CFStreamClientContext ctx = {0, static_cast<void*>(this), nil, nil, nil};
+  CFStreamClientContext ctx = {0, static_cast<void*>(this),
+                               CFStreamHandle::Retain, CFStreamHandle::Release,
+                               nil};
   CFReadStreamSetClient(
       read_stream,
       kCFStreamEventOpenCompleted | kCFStreamEventHasBytesAvailable |