From 8403b16a590360ee7b75992d3e85326c021f750e Mon Sep 17 00:00:00 2001
From: Stefan Farfeleder <stefanf@FreeBSD.org>
Date: Sat, 4 Apr 2009 19:06:52 +0000
Subject: [PATCH] Don't let trailing empty lines overwrite the result of the
 last command with 0. This affects the built-ins eval, fc, and trap and also
 the string passed to sh with the -c option.

Submitted by:	Jilles Tjoelker
---
 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 f6b702b3d2b0..26e21489440f 100644
--- a/bin/sh/eval.c
+++ b/bin/sh/eval.c
@@ -166,7 +166,8 @@ evalstring(char *s)
 	setstackmark(&smark);
 	setinputstring(s, 1);
 	while ((n = parsecmd(0)) != NEOF) {
-		evaltree(n, 0);
+		if (n != NULL)
+			evaltree(n, 0);
 		popstackmark(&smark);
 	}
 	popfile();