message: Update block maturity for the staking.
diff: @@ -3988,7 +3988,7 @@ int CMerkleTx::GetDepthInMainChain(const CBlockIndex* &pindexRet) const
  int CMerkleTx::GetBlocksToMaturity() const
  {
  - if (!IsCoinBase())
  + if (!(IsCoinBase() || IsCoinStake()))
  return 0;
  return max(0, (COINBASE_MATURITY+1) - GetDepthInMainChain());
  }
  