message: refactor: Use Mutex type for some mutexes in CNode class
diff: @@ -858,9 +858,9 @@ public:
  size_t nSendOffset{0}; // offset inside the first vSendMsg already sent
  uint64_t nSendBytes GUARDED_BY(cs_vSend){0};
  std::deque<std::vector<unsigned char>> vSendMsg GUARDED_BY(cs_vSend);
  - RecursiveMutex cs_vSend;
  - RecursiveMutex cs_hSocket;
  - RecursiveMutex cs_vRecv;
  + Mutex cs_vSend;
  + Mutex cs_hSocket;
  + Mutex cs_vRecv;
  RecursiveMutex cs_vProcessMsg;
  std::list<CNetMessage> vProcessMsg GUARDED_BY(cs_vProcessMsg);
  