fix leading zero

[klim0v]

it was a mistake on the m/44H/60H/0H path For example, mnemonic := "real town addict extend shoot name disagree vital turn live can tip" got c64f0b3e510d03adef3f057d1814bdc8a7f904caafa6928550fc10670dcff031 wanted c29cd818232f40614691a58c9afcbd5518b539cb135d73b1d9e26d5f5f5dcbbe (https://iancoleman.io/bip39/)

        // Generate a Bip32 HD wallet for the mnemonic and a user supplied password
    seed := bip39.NewSeed(mnemonic, "")

    // Generate a new master node using the seed.
    masterKey, err := hdkeychain.NewMaster(seed, &chaincfg.MainNetParams)
    if err != nil {
        return nil, nil, err
    }

    // This gives the path: m/44H
    acc44H, err := masterKey.Child(hdkeychain.HardenedKeyStart + 44)
    if err != nil {
        return nil, nil, err
    }

    // This gives the path: m/44H/60H
    acc44H60H, err := acc44H.Child(hdkeychain.HardenedKeyStart + 60)
    if err != nil {
        return nil, nil, err
    }

    // This gives the path: m/44H/60H/0H
    acc44H60H0H, err := acc44H60H.Child(hdkeychain.HardenedKeyStart + 0)
    if err != nil {
        return nil, nil, err
    }

    // This gives the path: m/44H/60H/0H/0
    acc44H60H0H0, err := acc44H60H0H.Child(0)
    if err != nil {
        return nil, nil, err
    }

    // This gives the path: m/44H/60H/0H/0/0
    acc44H60H0H00, err := acc44H60H0H0.Child(0)
    if err != nil {
        return nil, nil, err
    }

    btcecPrivKey, err := acc44H60H0H00.ECPrivKey()
    if err != nil {
        return nil, nil, err
    }

    privateKey := btcecPrivKey.ToECDSA()

[jakesylvestre]

Can you add a description here?

[klim0v]

Can you add a description here?

Done

[klim0v]

https://github.com/btcsuite/btcutil/pull/161