[lldb] Fix CommunicationKDP following D133251

[kastiglione]

Summary

Add m_bytes and m_bytes_mutex to CommunicationKDP, following refactoring
in D133251.

[kastiglione]

Note that these two fields are only used in CommunicationKDP::CheckForPacket.

[mgorny]

That's the same thing that I did for gdb-remote, so I suppose it is correct.

[mgorny]

… and thanks a lot for doing this.

[kastiglione]

thanks for the fast reply

lldb/source/Plugins/Process/MacOSX-Kernel/CommunicationKDP.h

protected:
   void ClearKDPSettings();
 
   bool SendRequestAndGetReply(const CommandType command,
                               const PacketStreamType &request_packet,
                               lldb_private::DataExtractor &reply_packet);
   // Classes that inherit from CommunicationKDP can see and modify these
   uint32_t m_addr_byte_size;
   lldb::ByteOrder m_byte_order;
+  std::string m_bytes;
+  std::recursive_mutex m_bytes_mutex;
   std::chrono::seconds m_packet_timeout;
   std::recursive_mutex m_sequence_mutex; // Restrict access to sending/receiving
                                          // packets to a single thread at a time
   lldb_private::Predicate<bool> m_is_running;
   uint32_t m_session_key;
   uint8_t m_request_sequence_id;
   uint8_t m_exception_sequence_id;
   uint32_t m_kdp_version_version;