[Dillo-dev] Nav_save_cb() after bw closed

Saw this in Jeremy's valgrind log. There's a a_UIcmd_set_msg(Web->bw, "File saved (%d Bytes)", st.st_size); that works not so well when the bw is gone. I know there's a /* TODO: keep track of this client */ in a_Nav_save_url... Should this be associated with a bw in this way?