message: Remove unnecessary `clone()` on `writable`
diff: @@ -411,13 +411,13 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriEvalContextExt<'mir, 'tcx
  let fh = &mut this.machine.file_handler;
  let (file_result, writable) = match fh.handles.get(&fd) {
  Some(file_descriptor) => match file_descriptor.as_file_handle() {
  - Ok(FileHandle { file, writable }) => (file.try_clone(), writable.clone()),
  + Ok(FileHandle { file, writable }) => (file.try_clone(), *writable),
  Err(_) => return this.handle_not_found(),
  },
  None => return this.handle_not_found(),
  };
  let fd_result = file_result.map(|duplicated| {
  - fh.insert_fd_with_min_fd(FileHandle { file: duplicated, writable: writable }, start)
  + fh.insert_fd_with_min_fd(FileHandle { file: duplicated, writable }, start)
  });
  this.try_unwrap_io_result(fd_result)
  } else if this.tcx.sess.target.target.target_os == "macos"
  