message: add empty output to createrawzerocoinstake
diff: @@ -957,12 +957,12 @@ UniValue createrawzerocoinstake(const UniValue& params, bool fHelp)
  // create the zerocoinmint output (one spent denom + three 1-zPIV denom)
  libzerocoin::CoinDenomination staked_denom = input_mint.GetDenomination();
  - std::vector<CTxOut> vOutMint(4);
  + std::vector<CTxOut> vOutMint(5);
  CDeterministicMint dMint;
  - if (!pwalletMain->CreateZPIVOutPut(staked_denom, vOutMint[0], dMint))
  + if (!pwalletMain->CreateZPIVOutPut(staked_denom, vOutMint[1], dMint))
  throw JSONRPCError(RPC_WALLET_ERROR, "failed to create new zpiv output");
  - for (int i=1; i<4; i++) {
  + for (int i=2; i<5; i++) {
  if (!pwalletMain->CreateZPIVOutPut(libzerocoin::ZQ_ONE, vOutMint[i], dMint))
  throw JSONRPCError(RPC_WALLET_ERROR, "failed to create new zpiv output");
  }
  