From 2384ae25e216de2c6cafde95ef6148d1e504df66 Mon Sep 17 00:00:00 2001
From: Peter Wemm <peter@FreeBSD.org>
Date: Tue, 11 Mar 1997 14:48:14 +0000
Subject: [PATCH] Merge from Lite2

---
 usr.bin/tsort/tsort.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/usr.bin/tsort/tsort.c b/usr.bin/tsort/tsort.c
index af63b1e8bba..bdcd9b2a5a9 100644
--- a/usr.bin/tsort/tsort.c
+++ b/usr.bin/tsort/tsort.c
@@ -33,7 +33,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $Id: tsort.c,v 1.6 1997/02/22 19:57:28 peter Exp $
  */
 
 #ifndef lint
@@ -56,6 +56,7 @@ static char sccsid[] = "@(#)tsort.c	8.3 (Berkeley) 5/4/95";
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 
 /*
  *  Topological sort.  Input is a list of pairs of strings separated by