$NetBSD: patch-ae,v 1.1.1.1 2001/04/22 09:58:59 kei Exp $

--- plview.c.orig	Wed Jul 31 17:06:12 1996
+++ plview.c
@@ -29,6 +29,7 @@
 #include "global.h"
 #include <curses.h>
 #include <signal.h>
+#include <unistd.h>
 
 extern char *pai_strings[];
 river_t mrv[4][RIVER_MAX];