Fix minor error in error text handling

servers/slapd/schema_check.c

tests/data/acl.out.master

tests/data/do_add.1

tests/data/modify.out.master

tests/data/modrdn.out.master

tests/data/modrdn.out.master.0

tests/data/modrdn.out.master.1

tests/data/modrdn.out.master.2

tests/data/modrdn.out.master.3

tests/data/search.out.master

tests/data/slapd-acl.conf

tests/data/slapd-master.conf

tests/data/slapd-passwd.conf

tests/data/slapd-pw.conf

tests/data/slapd-ref-slave.conf

tests/data/slapd-repl-master.conf

tests/data/slapd-repl-slave.conf

tests/data/slapd-repl-submaster.conf

tests/data/slapd-repl-subslave.conf

tests/data/slapd.conf