From 15674d9ee911d31a0e8889c78d00eb0154f09103 Mon Sep 17 00:00:00 2001
From: Tibor Vass <tibor@docker.com>
Date: Sat, 9 Jun 2018 01:16:51 +0000
Subject: [PATCH] build: simplify Close logic in WriteTempDockerfile

Signed-off-by: Tibor Vass <tibor@docker.com>
---
 cli/command/image/build/context.go | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/cli/command/image/build/context.go b/cli/command/image/build/context.go
index eaeac9e195..d3de277415 100644
--- a/cli/command/image/build/context.go
+++ b/cli/command/image/build/context.go
@@ -111,12 +111,8 @@ func WriteTempDockerfile(rc io.ReadCloser) (string, error) {
 	if err != nil {
 		return "", err
 	}
-	_, err = io.Copy(f, rc)
-	if err != nil {
-		f.Close()
-		return "", err
-	}
-	if err := f.Close(); err != nil {
+	defer f.Close()
+	if _, err := io.Copy(f, rc); err != nil {
 		return "", err
 	}
 	return dockerfileDir, rc.Close()