$OpenBSD: patch-mutt_tunnel_c,v 1.3 2005/09/14 21:00:03 bernd Exp $
--- mutt_tunnel.c.orig	Thu Aug 11 21:37:02 2005
+++ mutt_tunnel.c	Fri Aug 12 09:21:37 2005
@@ -95,7 +95,7 @@ static int tunnel_socket_open (CONNECTIO
     /* Don't let the subprocess think it can use the controlling tty */
     setsid ();
 
-    execl (EXECSHELL, "sh", "-c", Tunnel, NULL);
+    execl (EXECSHELL, "sh", "-c", Tunnel, (void *)NULL);
     _exit (127);
   }
   mutt_unblock_signals_system (1);
