[lldb] Use the NativeSock type instead of plain 'int'

[mstorsjo]

Summary

This fixes a warning when building for Windows:

../tools/lldb/source/Host/common/TCPSocket.cpp:297:16: warning: comparison of integers of different signs: 'int' and 'const NativeSocket' (aka 'const unsigned long long') [-Wsign-compare]
      if (sock != kInvalidSocketValue) {
          ~~~~ ^  ~~~~~~~~~~~~~~~~~~~

[fixathon]

LGTM, thanks for the fix!

lldb/source/Host/common/TCPSocket.cpp

 
 Status TCPSocket::Accept(Socket *&conn_socket) {
   Status error;
   if (m_listen_sockets.size() == 0) {
     error.SetErrorString("No open listening sockets!");
     return error;
   }
 
-  int sock = kInvalidSocketValue;
-  int listen_sock = kInvalidSocketValue;
+  NativeSocket sock = kInvalidSocketValue;
+  NativeSocket listen_sock = kInvalidSocketValue;
   lldb_private::SocketAddress AcceptAddr;
   MainLoop accept_loop;
   std::vector<MainLoopBase::ReadHandleUP> handles;
   for (auto socket : m_listen_sockets) {
     auto fd = socket.first;
     auto inherit = this->m_child_processes_inherit;
     auto io_sp = IOObjectSP(new TCPSocket(socket.first, false, inherit));
     handles.emplace_back(accept_loop.RegisterReadObject(