message: Fixed warning in the file
  Initialized the variable to fix the warning
diff: @@ -163,7 +163,7 @@ class TextFileLineIterator
  int64 total_size() const override {
  if (vocab_size_ == -1) {
  - int64 new_size;
  + int64 new_size = -1;
  Status status = GetNumLinesInTextFile(env_, filename_, &new_size);
  if (!status.ok()) {
  LOG(WARNING) << "Unable to get line count: " << status;
  