message: FAPL: unwrap return value in driver()
diff: @@ -1461,8 +1461,8 @@ impl FileAccess {
  }
  }
  - pub fn driver(&self) -> Option<FileDriver> {
  - self.get_driver().ok()
  + pub fn driver(&self) -> FileDriver {
  + self.get_driver().unwrap_or(FileDriver::Sec2)
  }
  #[doc(hidden)]
  