Bail if argumets are set after varnishd is launched.

git-svn-id: http://www.varnish-cache.org/svn/trunk@4571 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishtest/vtc_varnish.c

@@ -639,6 +639,7 @@ cmd_varnish(CMD_ARGS)
 			break;
 		if (!strcmp(*av, "-arg")) {
 			AN(av[1]);
+			AZ(v->pid);
 			vsb_cat(v->args, " ");
 			vsb_cat(v->args, av[1]);
 			av++;