hd.js: workaround for latest bn.js.
hd.js: workaround for latest bn.js.

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