From 8a24c9b1777986b6124db55dda8a320ef552bc84 Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <mitchell.hashimoto@gmail.com>
Date: Tue, 10 Dec 2013 17:09:17 -0800
Subject: [PATCH] packer/rpc: fix data race in MuxConn

---
 packer/rpc/muxconn.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/packer/rpc/muxconn.go b/packer/rpc/muxconn.go
index 8ff8b4aec..9201dfaa7 100644
--- a/packer/rpc/muxconn.go
+++ b/packer/rpc/muxconn.go
@@ -241,7 +241,9 @@ func (m *MuxConn) loop() {
 		m.mu.Lock()
 		defer m.mu.Unlock()
 		for _, w := range m.streams {
+			w.mu.Lock()
 			w.remoteClose()
+			w.mu.Unlock()
 		}
 	}()