message: update VerilogPreprocOutBuffer constructor
diff: @@ -52,7 +52,7 @@ public:
  void parse_file(const filesystem::path &file_name, bool hierarchyOnly,
  std::vector<std::string> &_incdirs) {
  preproc.init(_incdirs);
  - verilog_pp::VerilogPreprocOutBuffer preprocess_res;
  + verilog_pp::VerilogPreprocOutBuffer preprocess_res(0);
  preproc.run_preproc_file(file_name, preprocess_res);
  string preprocessed_code = preprocess_res.str();
  file_line_map = preprocess_res.file_line_map;
  @@ -136,7 +136,7 @@ string Convertor::verilog_pp(const string &fileName,
  HdlContext c; // dummy context
  SVParserContainer pc(c, lang, defineDB);
  pc.preproc.init(_incdirs);
  - verilog_pp::VerilogPreprocOutBuffer res;
  + verilog_pp::VerilogPreprocOutBuffer res(0);
  pc.preproc.run_preproc_file(fileName, res);
  return res.str();
  }
  