use BER_BVNULL

servers/slapd/acl.c

servers/slapd/aclparse.c

servers/slapd/add.c

servers/slapd/back-bdb/ctxcsn.c

servers/slapd/back-bdb/init.c

servers/slapd/back-bdb/search.c

servers/slapd/back-dnssrv/search.c

servers/slapd/back-ldap/add.c

servers/slapd/back-ldap/bind.c

servers/slapd/back-ldap/compare.c

servers/slapd/back-ldap/delete.c

servers/slapd/back-ldap/extended.c

servers/slapd/back-ldap/modify.c

servers/slapd/back-ldap/modrdn.c

servers/slapd/back-ldap/search.c

servers/slapd/back-ldbm/modrdn.c

servers/slapd/back-ldbm/search.c

servers/slapd/back-meta/add.c

servers/slapd/back-meta/bind.c

servers/slapd/back-meta/compare.c