$OpenBSD: patch-io_posix_htsys_cc,v 1.1 2004/01/04 17:27:48 sturm Exp $
--- io/posix/htsys.cc.orig	2004-01-04 17:55:28.000000000 +0100
+++ io/posix/htsys.cc	2004-01-04 17:59:08.000000000 +0100
@@ -209,7 +209,7 @@ int sys_ipc_exec(ht_streamfile **in, ht_
 		close(in_fds[0]);
 		close(out_fds[1]);
 		close(err_fds[1]);
-		execl(cmd, cmd, NULL);
+		execl(cmd, cmd, (void *)NULL);
 		exit(1);
 	} else return errno;
 }