From eec1af54d1eb8b7b2faa95bc077994190db32c6f Mon Sep 17 00:00:00 2001
From: Ian Babrou <ibobrik@gmail.com>
Date: Thu, 22 Jan 2015 10:36:20 +0300
Subject: [PATCH] Not doing extra assertion for io.Closer

Signed-off-by: Ian Babrou <ibobrik@gmail.com>
---
 chrootarchive/diff.go | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/chrootarchive/diff.go b/chrootarchive/diff.go
index ac1cbf9..8d97c76 100644
--- a/chrootarchive/diff.go
+++ b/chrootarchive/diff.go
@@ -5,7 +5,6 @@ import (
 	"encoding/json"
 	"flag"
 	"fmt"
-	"io"
 	"io/ioutil"
 	"os"
 	"path/filepath"
@@ -60,11 +59,7 @@ func ApplyLayer(dest string, layer archive.ArchiveReader) (size int64, err error
 		return 0, err
 	}
 
-	defer func() {
-		if c, ok := decompressed.(io.Closer); ok {
-			c.Close()
-		}
-	}()
+	defer decompressed.Close()
 
 	cmd := reexec.Command("docker-applyLayer", dest)
 	cmd.Stdin = decompressed