message: Fix handle_auth_failure stack ref
diff: @@ -840,16 +840,16 @@ void App::handle_auth_failure(const AppError& error,
  std::shared_ptr<SyncUser> sync_user,
  std::function<void (Response)> completion_block) const
  {
  - auto transport_generator = m_config.transport_generator();
  - auto access_token_handler = [&transport_generator,
  - &request,
  + auto access_token_handler = [this,
  + request,
  completion_block,
  response,
  sync_user](const Optional<AppError>& error) {
  if (!error) {
  // assign the new access_token to the auth header
  - request.headers = get_request_headers(sync_user, RequestTokenType::AccessToken);
  - transport_generator->send_request_to_server(request, completion_block);
  + Request newRequest = request;
  + newRequest.headers = get_request_headers(sync_user, RequestTokenType::AccessToken);
  + m_config.transport_generator()->send_request_to_server(newRequest, completion_block);
  } else {
  // pass the error back up the chain
  completion_block(response);
  