message: Tweak PrintInterpreterState() output
  Output names for custom ops and properly insert newlines for
  null IntVectors.
diff: @@ -25,7 +25,7 @@ void PrintIntVector(const std::vector<int>& v) {
  void PrintTfLiteIntVector(const TfLiteIntArray* v) {
  if (!v) {
  - printf(" (null)");
  + printf(" (null)\n");
  return;
  }
  for (int k = 0; k < v->size; k++) {
  @@ -99,8 +99,12 @@ void PrintInterpreterState(Interpreter* interpreter) {
  interpreter->node_and_registration(node_index);
  const TfLiteNode& node = node_and_reg->first;
  const TfLiteRegistration& reg = node_and_reg->second;
  + if (reg.custom_name != nullptr) {
  + printf("Node %3d Operator Custom Name %s\n", node_index, reg.custom_name);
  + } else {
  printf("Node %3d Operator Builtin Code %3d\n", node_index,
  reg.builtin_code);
  + }
  printf(" Inputs:");
  PrintTfLiteIntVector(node.inputs);
  printf(" Outputs:");
  