$OpenBSD: patch-authpipelib_c,v 1.2 2007/06/25 12:12:26 espie Exp $
--- authpipelib.c.orig	Thu Aug 11 01:41:21 2005
+++ authpipelib.c	Mon Jun 25 12:35:33 2007
@@ -42,7 +42,7 @@ static void execChild(int to[], int from[])
 	close(STDOUT_FILENO); dup2(from[1], STDOUT_FILENO);
 	close(to[0]); close(to[1]); close(from[0]); close(from[1]);
 
-	execl(PIPE_PROGRAM, PIPE_PROGRAM, NULL);
+	execl(PIPE_PROGRAM, PIPE_PROGRAM, (char *)NULL);
 
 	DPRINTF("pipe: failed to execute %s: %s",PIPE_PROGRAM, strerror(errno));
 	exit(1);