cifs: use the NUM_AUTHS and NUM_SUBAUTHS constants in cifsacl code

...instead of hardcoding in '5' and '6' all over the place.

Reviewed-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
2 files changed