message: p2p: add CInv block message helper methods
diff: @@ -419,11 +419,21 @@ public:
  // Single-message helper methods
  bool IsMsgTx() const { return type == MSG_TX; }
  + bool IsMsgBlk() const { return type == MSG_BLOCK; }
  bool IsMsgWtx() const { return type == MSG_WTX; }
  - bool IsMsgWitnessTx() const { return type == MSG_WITNESS_TX; }
  + bool IsMsgFilteredBlk() const { return type == MSG_FILTERED_BLOCK; }
  + bool IsMsgCmpctBlk() const { return type == MSG_CMPCT_BLOCK; }
  + bool IsMsgWitnessBlk() const { return type == MSG_WITNESS_BLOCK; }
  // Combined-message helper methods
  - bool IsGenTxMsg() const { return type == MSG_TX || type == MSG_WTX || type == MSG_WITNESS_TX; }
  + bool IsGenTxMsg() const
  + {
  + return type == MSG_TX || type == MSG_WTX || type == MSG_WITNESS_TX;
  + }
  + bool IsGenBlkMsg() const
  + {
  + return type == MSG_BLOCK || type == MSG_FILTERED_BLOCK || type == MSG_CMPCT_BLOCK || type == MSG_WITNESS_BLOCK;
  + }
  int type;
  uint256 hash;
  