$NetBSD: patch-ac,v 1.1.1.1 2007/07/25 00:11:10 rillig Exp $

--- connect4.c.orig	1997-07-27 17:29:38.000000000 +0200
+++ connect4.c	2007-07-25 01:52:05.000000000 +0200
@@ -276,7 +276,7 @@ void initTitle()
     printf("All rights reserved.\n\n");
     }
 
-void main(short ac,char **av)
+int main(void)
 	{
 	short x;
 	struct board *board;
@@ -324,7 +324,7 @@ void main(short ac,char **av)
 
         free(board->solvable_groups);
         free(board);
-        exit(0);
+        return 0;
         }