message: move case to same place as the other invalid cases
diff: @@ -75,6 +75,7 @@ static bool SignStep(const BaseSignatureCreator& creator, const CScript& scriptP
  CKeyID keyID;
  switch (whichTypeRet)
  {
  + case TX_LABELPUBLIC: // These are OP_RETURN unspendable outputs so they should never be an input that needs signing
  case TX_NONSTANDARD:
  case TX_NULL_DATA:
  return false;
  @@ -104,8 +105,6 @@ static bool SignStep(const BaseSignatureCreator& creator, const CScript& scriptP
  case TX_MULTISIG:
  scriptSigRet << OP_0; // workaround CHECKMULTISIG bug
  return (SignN(vSolutions, creator, scriptPubKey, scriptSigRet));
  - case TX_LABELPUBLIC: // These are OP_RETURN unspendable outputs so they should never be an input that needs signing
  - return false;
  }
  return false;
  