UBUNTU: SAUCE: apparmor: fix vec_unique for vectors larger than 8

UBUNTU: SAUCE: apparmor: fix vec_unique for vectors larger than 8

the vec_unique path for large vectors is broken, leading to oopses
when a file handle is shared between 8 different security domains, and
then a profile replacement/removal causing a label invalidation (ie. not
all replacements) is done.

BugLink: http://bugs.launchpad.net/bugs/1579135
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>