Issue 49169 - Fix covscan errors
    
    src/libsds/bpt/map.c  - resource leak
    ldap/servers/slapd/vattr.c - resource leak
    ldap/servers/slapd/task.c:  resource leaks
    ldap/servers/slapd/str2filter.c - resource leak
    ldap/servers/slapd/pw.c - resource leak
    ldap/servers/slapd/back-ldbm/import-threads.c - resource leak
    ldap/servers/plugins/uiduniq/uid.c:536 - resource leak
    ldap/servers/plugins/pwdstorage/pbkdf2_pwd.c:164 - resource leak
    ldap/servers/plugins/linkedattrs/linked_attrs.c:1672 - resource leak
    ldap/servers/plugins/addn/addn.c:419
    ldap/servers/slapd/ssl.c - dead code
    ldap/servers/slapd/index_subsystem.c - null dereference
    
    https://pagure.io/389-ds-base/issue/49169
    
    Reviewed by: nkinder & wibrown(Thanks!!)