Ticket 47740 - Fix sync plugin resource leaks
12503 - resource leak - /ldap/servers/plugin/sync/sync_refresh.c
12502 - resource leak - /ldap/servers/plugin/sync/sync_refresh.c
12501 - resource leak - /ldap/servers/plugin/sync/sync_refresh.c
https://fedorahosted.org/389/ticket/47740
Reviewed by: lkripenz & nhosoi(Thanks!!)
(cherry picked from commit 78f1bda48ba31c71f49ff89e2a32bd2e2227cc1b)