router ioctl fix

[smoku]

every single ioctl call from router produces bad file descriptor error. Here's a diff to fix the problem:

> @@ -847,7 +847,7 @@
>              /* they did something */
>              comp->last_activity = time(NULL);
>  
> -            ioctl(fd, FIONREAD, &nbytes);
> +            ioctl(fd->fd, FIONREAD, &nbytes);
>              if(nbytes == 0) {
>                  sx_kill(comp->s);
>                  return 0;

[smoku]

(In [137]) Fixed fd target for ioctls. Fixes #6