mempool: fix address index.
mempool: fix address index.

decentraland/decentraland-node,decentraland/bronzeage-node,decentraland/bronzeage-node,decentraland/bronzeage-node,VidaID/bcoin,decentraland/decentraland-node,VidaID/bcoin,decentraland/decentraland-node,VidaID/bcoin