$NetBSD: patch-ch,v 1.3 2013/04/21 15:39:59 joerg Exp $

- use standard headers
- don't declare own errno

--- src/callproc.c.orig	1995-07-17 04:54:29.000000000 +0000
+++ src/callproc.c
@@ -56,9 +56,10 @@ the Free Software Foundation, 675 Mass A
 
 #include <config.h>
 #include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
 
-extern int errno;
-extern char *strerror ();
 
 /* Define SIGCHLD as an alias for SIGCLD.  */