message: fix misleading type
diff: @@ -25,7 +25,7 @@ trait FileWatcher {
  fn did_change_file(&mut self, path: &Path);
  }
  -fn read(db: &dyn salsa::Database, path: PathBuf) -> String {
  +fn read(db: &dyn VfsDatabase, path: PathBuf) -> String {
  db.salsa_runtime()
  .report_synthetic_read(salsa::Durability::LOW);
  db.watch(&path);
  