Appeals — Certiorari — Dissolution of marriage — Marital settlement agreement by which wife agreed to allow husband’s lawyer to maintain a lis pendens on her home until husband’s attorney’s fees were paid — Wife’s petition for writ of certiorari to quash trial court’s order denying her post judgment motion to discharge lis pendens — Because only remedy available to appellate court on petition for writ of certiorari is to quash order denying motion to discharge lis pendens, granting of petition would be ineffectual because all that would do is leave lis pendens in place