// AddSigHashes computes, then adds the partial sighashes for the passed
// transaction.
func (h *HashCache) AddSigHashes(tx *wire.MsgTx) {
h.Lock()
defer h.Unlock()
sigHashes := NewTxSigHashes(tx)
txid := tx.TxHash()
h.sigHashes[txid] = sigHashes
return
}
