message: [Consensus] Fix output index in CheckColdStake()
  fix OP_CHECKCOLDSTAKE output scripts verification exlcuding the coinstake marker
diff: @@ -224,9 +224,9 @@ bool CTransaction::CheckColdStake() const
  // all outputs except first (coinstake marker) and last (masternode payout)
  // have the same pubKeyScript
  - firstScript = vout[0].scriptPubKey;
  + firstScript = vout[1].scriptPubKey;
  if (vout.size() > 3) {
  - for (unsigned int i=1; i<vout.size()-1; i++)
  + for (unsigned int i=2; i<vout.size()-1; i++)
  if (vout[i].scriptPubKey != firstScript) return false;
  }
  