message: consensus: make COIN & MAX_MONEY constexpr
diff: /** Amount in satoshis (Can be negative) */
  typedef int64_t CAmount;
  -static const CAmount COIN = 1000000;
  +static constexpr CAmount COIN = 1000000;
  static const CAmount CENT = 10000;
  static const CAmount MIN_TX_FEE_PREV7 = CENT;
  @@ -32,7 +32,7 @@ static const std::string CURRENCY_UNIT = "PPC";
  * critical; in unusual circumstances like a(nother) overflow bug that allowed
  * for the creation of coins out of thin air modification could lead to a fork.
  * */
  -static const CAmount MAX_MONEY = 21000000 * COIN;
  +static constexpr CAmount MAX_MONEY = 21000000 * COIN;
  inline bool MoneyRange(const CAmount& nValue) { return (nValue >= 0 && nValue <= MAX_MONEY); }
  #endif // BITCOIN_CONSENSUS_AMOUNT_H
  