message: Fix missing log print vars.
diff: @@ -4295,7 +4295,7 @@ bool ContextualCheckZerocoinSpend(const CTransaction& tx, const libzerocoin::Coi
  //This is important because proof of stake validation code uses the accumulator checksum to determine the height
  int nHeightChecksum = GetChecksumHeight(spend.getAccumulatorChecksum(), spend.getDenomination());
  if (nHeightMintTx >= nHeightChecksum)
  - return error("%s: invalid tx %s uses accumulator checksum that is before it was minted");
  + return error("%s: invalid tx %s uses accumulator checksum that is before it was minted", __func__, txid.GetHex());
  }
  //Check to see if the zcspend is the correct denomination
  @@ -4318,7 +4318,7 @@ bool ContextualCheckZerocoinSpend(const CTransaction& tx, const libzerocoin::Coi
  if (checkMode & CHECK_LIGHTMODE) {
  //Can lookup the outpoint directly instead of iterating through vpout
  - if (txMint->vpout.size() <= nOutPointPos)
  + if (txMint->vpout.size() <= static_cast<unsigned int>(nOutPointPos))
  return error("%s: outpoint %s:%d does not exist", __func__, txid.GetHex(), nOutPointPos);
  auto txout = txMint->vpout[nOutPointPos];
  if (!txout->IsZerocoinMint())
  @@ -4520,7 +4520,7 @@ static bool ContextualCheckBlock(const CBlock& block, CValidationState& state, c
  int nHeightSpend = 0;
  if (IsSerialInBlockchain(hashSerial, nHeightSpend, pindexPrev))
  return state.DoS(100, false, REJECT_INVALID, "bad-zcspend-in-chain", false,
  - strprintf("Zerocoin serial hash %s already spent in block %d", hashSerial.GetHex(), nHeightSpend));
  + strprintf("Tx %s spends Zerocoin serial hash %s already spent in block %d", tx->GetHash().GetHex(), hashSerial.GetHex(), nHeightSpend));
  }
  }
  }
  