From 12e6c1b382f9896bad4dcabc8ced02701168560c Mon Sep 17 00:00:00 2001
From: xtaci <imap@live.com>
Date: Tue, 14 May 2019 11:08:51 +0800
Subject: [PATCH] add a line of comment

---
 stream.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/stream.go b/stream.go
index 5da942c..5515ee5 100644
--- a/stream.go
+++ b/stream.go
@@ -109,6 +109,7 @@ func (s *Stream) Write(b []byte) (n int, err error) {
 		deadline = timer.C
 	}
 
+	// check if stream has closed
 	select {
 	case <-s.die:
 		return 0, errors.WithStack(io.ErrClosedPipe)