Lifetime membership expired

A lifetime membership created in the past is given the status of "expired".

I tried figuring this one out, but I can't figure out what exactly is going wrong. It appears that the while loop in CRM_Member_BAO_MembershipStatus::getMembershipStatusByDate() goes through a couple of query results before returning Expired. If you debug it by adding:

print_r($membershipDetails); if($membershipDetails['name'] == 'Expired')

{ die(); }

at line 315, you'll see that it prints:

Array
(
[id] => 2
[name] => Current
)
Array
(
[id] => 4
[name] => Expired
)

Theoretically, the loop should break after the first one, so I don't know what's going wrong.