message: Add scriptsig zerocoinspend check
diff: @@ -179,7 +179,7 @@ CAmount CTxIn::GetZerocoinSpent() const
  bool CTxIn::IsZerocoinSpend() const
  {
  - return IsZerocoinSpend();
  + return scriptSig.IsZerocoinSpend();
  }
  CTxOut::CTxOut(const CAmount& nValueIn, CScript scriptPubKeyIn)
  