message: Update bip32 property
diff: @@ -152,10 +152,7 @@ class LitecoinTestnet extends Testnet implements UtxoNetwork {
  // zCash inherits a fair bit of config from Bitcoin
  class ZCash extends Mainnet implements UtxoNetwork {
  messagePrefix = '\x18ZCash Signed Message:\n';
  - bip32 = {
  - public: Bitcoin.prototype.bip32.public,
  - private: Bitcoin.prototype.bip32.private,
  - };
  + bip32 = Bitcoin.prototype.bip32;
  pubKeyHash = 0x1cb8;
  scriptHash = 0x1cbd;
  wif = Bitcoin.prototype.wif;
  @@ -165,10 +162,7 @@ class ZCash extends Mainnet implements UtxoNetwork {
  // TZEC inherits a fair bit of config from BitcoinTestnet
  class ZCashTestnet extends Testnet implements UtxoNetwork {
  messagePrefix = ZCash.prototype.messagePrefix;
  - bip32 = {
  - public: BitcoinTestnet.prototype.bip32.public,
  - private: BitcoinTestnet.prototype.bip32.private,
  - };
  + bip32 = BitcoinTestnet.prototype.bip32;
  pubKeyHash = 0x1d25;
  scriptHash = 0x1cba;
  wif = BitcoinTestnet.prototype.wif;
  