message: [tf.data] Fix compiler warning due to lock analysis in model.h.
diff: @@ -247,10 +247,13 @@ class Node {
  LOCKS_EXCLUDED(mu_) {
  tf_shared_lock l(mu_);
  std::shared_ptr<Node> result = Clone(output);
  + {
  + mutex_lock l2(result->mu_);
  result->buffered_bytes_ = buffered_bytes_;
  result->processing_time_ = processing_time_;
  result->num_elements_ = num_elements_;
  result->parameters_ = parameters_;
  + }
  for (auto& input : inputs_) {
  result->add_input(input->Snapshot(result));
  }
  