From 2005d3ff3661220f11e8ff1911b24051b3669566 Mon Sep 17 00:00:00 2001
From: Denys Vlasenko <vda.linux@googlemail.com>
Date: Sat, 4 Aug 2018 21:06:02 +0200
Subject: tar: fix a thinko in prev commit - we need to copy to _unused_ fd

function                                             old     new   delta
vfork_compressor                                     257     246     -11

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---
 archival/tar.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git archival/tar.c archival/tar.c
index 120c77f..1c71f7f 100644
--- archival/tar.c
+++ archival/tar.c
@@ -652,8 +652,7 @@ static void NOINLINE vfork_compressor(int tar_fd, const char *gzip)
 			 * Swapping move_fd's order wouldn't work:
 			 * gzipDataPipe.rd is 1 and _it_ would be destroyed.
 			 */
-			xmove_fd(tfd, 3);
-			tfd = 3;
+			tfd = dup(tfd);
 		}
 		xmove_fd(gzipDataPipe.rd, 0);
 		xmove_fd(tfd, 1);