fs/ntfs3: Change new sparse cluster processing

commit c380b52f upstream.

Remove ntfs_sparse_cluster.
Zero clusters in attr_allocate_clusters.
Fixes xfstest generic/263

Bug: https://syzkaller.appspot.com/bug?extid=f3e5d0948a1837ed1bb0


Reported-by:  <syzbot+f3e5d0948a1837ed1bb0@syzkaller.appspotmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Miguel Garcia Roman <miguelgarciaroman8@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>