fs/ntfs3: Add more checks in mi_enum_attr (part 2)

Add offset check before access to attr->non_res field as mentioned in [1].

[1] https://lore.kernel.org/ntfs3/20241010110005.42792-1-llfamsec@gmail.com/



Suggested-by: lei lu <llfamsec@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>