two crash fixes
Ticket #348 - crash in ldap_initialize with multiple threads
Ticket #347 - IPA dirsvr seg-fault during system longevity test
(cherry picked from commit c24eb783169ca2298d94979e12c0acc74f3a3a24)
(cherry picked from commit 6243d8c40a330208e3aa2beab08d6b122740975b)