minor cleanup

servers/slapd/attr.c

servers/slapd/back-monitor/conn.c

servers/slapd/back-monitor/init.c

servers/slapd/back-monitor/search.c

servers/slapd/bind.c

servers/slapd/compare.c

servers/slapd/config.c

servers/slapd/connection.c

servers/slapd/daemon.c

servers/slapd/dn.c

servers/slapd/entry.c

servers/slapd/main.c

servers/slapd/proto-slap.h

servers/slapd/referral.c

servers/slapd/root_dse.c

servers/slapd/sasl.c

servers/slapd/schema_init.c

servers/slapd/schemaparse.c

servers/slapd/sets.c

servers/slapd/starttls.c