From e64a11e9eb3544ebd91b4ed27543fc98122c773a Mon Sep 17 00:00:00 2001
From: Jilles Tjoelker <jilles@FreeBSD.org>
Date: Sun, 15 May 2011 17:00:43 +0000
Subject: [PATCH] sh: Avoid close(-1) when evaluating a multi-command pipeline.

Valgrind complains about this.
---
 bin/sh/eval.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/bin/sh/eval.c b/bin/sh/eval.c
index b0ee28e7b0e7..b19c24f81a91 100644
--- a/bin/sh/eval.c
+++ b/bin/sh/eval.c
@@ -552,7 +552,8 @@ evalpipe(union node *n)
 		if (prevfd >= 0)
 			close(prevfd);
 		prevfd = pip[0];
-		close(pip[1]);
+		if (pip[1] != -1)
+			close(pip[1]);
 	}
 	INTON;
 	if (n->npipe.backgnd == 0) {