message: Fixed error when spending two times in a row
diff: @@ -3949,6 +3949,13 @@ bool CWallet::CreateZerocoinSpendTransaction(int64_t nValue, libzerocoin::CoinDe
  if (!CWalletDB(strWalletFile).WriteCoinSpendSerialEntry(entry)) {
  strFailReason = _("it cannot write coin serial number into wallet");
  }
  +
  + coinToUse.IsUsed = true;
  + coinToUse.id = coinId;
  + coinToUse.nHeight = coinHeight;
  + CWalletDB(strWalletFile).WriteZerocoinEntry(coinToUse);
  + pwalletMain->NotifyZerocoinChanged(pwalletMain, coinToUse.value.GetHex(), "Used",
  + CT_UPDATED);
  }
  }
  