fix tx.render() and avoidFeeSnipping().
fix tx.render() and avoidFeeSnipping().

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