message: Fix symbol_table after making VeribleProject's map to use unique_ptr
diff: @@ -1815,7 +1815,7 @@ static void ParseFileAndBuildSymbolTable(
  void SymbolTable::Build(std::vector<absl::Status>* diagnostics) {
  for (auto& translation_unit : *project_) {
  - ParseFileAndBuildSymbolTable(&translation_unit.second, this, project_,
  + ParseFileAndBuildSymbolTable(translation_unit.second.get(), this, project_,
  diagnostics);
  }
  }
  