message: [gdb-remote] Sanity check platform pointer
diff: @@ -979,8 +979,11 @@ Status GDBRemoteCommunication::StartDebugserverProcess(
  g_debugserver_file_spec = debugserver_file_spec;
  } else {
  + if (platform)
  debugserver_file_spec =
  platform->LocateExecutable(DEBUGSERVER_BASENAME);
  + else
  + debugserver_file_spec.Clear();
  if (debugserver_file_spec) {
  // Platform::LocateExecutable() wouldn't return a path if it doesn't
  // exist
  