message: Fix to use reference
diff: namespace duckdb {
  -static string_t BarScalarFunction(double x, double min, double max, double max_width, string result) {
  +static string_t BarScalarFunction(double x, double min, double max, double max_width, string &result) {
  static const char *FULL_BLOCK = UnicodeBar::FullBlock();
  static const char *const *PARTIAL_BLOCKS = UnicodeBar::PartialBlocks();
  static const idx_t PARTIAL_BLOCKS_COUNT = UnicodeBar::PartialBlocksCount();
  