$NetBSD: patch-ac,v 1.1 2002/01/18 17:32:23 drochner Exp $

--- Yorick/yio.h.orig	Thu Dec  5 01:49:39 1996
+++ Yorick/yio.h	Fri Jan 18 18:25:01 2002
@@ -18,6 +18,7 @@
 #ifndef NO_STDIO_H
 #include <stdio.h>
 #endif
+#include <unistd.h>
 
 /* Here are the ANSI standard prototypes for all of the stdio.h functions
    used by Yorick.  The defintion of FILE is, of course, bogus,