From b3e46f5d076559b2c627d45ded3aab0bf1057a9a Mon Sep 17 00:00:00 2001
From: Darien Raymond <admin@v2ray.com>
Date: Mon, 19 Feb 2018 17:50:53 +0100
Subject: [PATCH] fix error handling in buf.Copy

---
 common/buf/copy.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/common/buf/copy.go b/common/buf/copy.go
index 7d19efdda..7d487c174 100644
--- a/common/buf/copy.go
+++ b/common/buf/copy.go
@@ -92,7 +92,9 @@ func copyInternal(reader Reader, writer Writer, handler *copyHandler) error {
 				buffer.Release()
 				return werr
 			}
-		} else if err != nil {
+		}
+
+		if err != nil {
 			return err
 		}
 	}