message: [lldb] [lldb-server] Catch and report errors from main loop
  Catch the possible error from lldb-gdbserver's main loop, and report
  it verbosely.  Currently, if the loop fails the server exits normally,
  rendering the problem indistinguishable from regular termination.
diff: @@ -533,7 +533,12 @@ int main_gdbserver(int argc, char *argv[]) {
  return 1;
  }
  - mainloop.Run();
  + Status ret = mainloop.Run();
  + if (ret.Fail()) {
  + fprintf(stderr, "lldb-server terminating due to error: %s\n",
  + ret.AsCString());
  + return 1;
  + }
  fprintf(stderr, "lldb-server exiting...\n");
  return 0;
  