fat: Fix the removal of opts->fs_dmask

(ce3b0f8d5c2203301fc87f3aaaed73e5819e2a48: New helper - current_umask())
is removing the opts->fs_dmask, probably it's a cut-and-paste
miss or something.

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
1 file changed