Ticket 47958 - Memory leak in password admin if the admin entry does not exist
Bug Description: If passwordAdminDN is set to an entry that does not exist memory
is leaked.
Fix Description: The leak occurs because we do not free the internal search results,
even when zero entries are returned.
https://fedorahosted.org/389/ticket/47958
Reviewed by: rmeggins(Thanks!)
(cherry picked from commit 6ee9a1bd3aa5014aff3b8b07a032c35a1c66d2e2)