fix some warnings in ldap code

fix some warnings in ldap code

* libkdb_ldap/ldap_realm.c (ignore_duplicates, compare): Unused functions deleted.
(krb5_ldap_modify_realm, krb5_ldap_read_realm_params): Conditionalize declarations of
automatic variables that are only used for eDirectory.
* libkdb_ldap/ldap_service_stash.c (tohex): Use one sprintf call instead of two.
(dec_password): Use an unsigned type to fetch values with %x.
* libkdb_ldap/ldap_realm.h (ldap_filter_correct): Declare.
* libkdb_dlap/ldap_misc.c (my_strndup): Only define if HAVE_LDAP_STR2DN.
(populate_krb5_db_entry): Remove unused automatic variable.
* ldap_util/kdb5_ldap_util.c (cmd_table): Fix typo in preprocessing conditional.
* ldap_util/kdb5_ldap_realm.c (get_ticket_policy): Declarations first, then code.
* ldap_util/kdb5_ldap_services.c (kdb5_ldap_stash_service_password): On error, increment
exit_status; don't return a value.
* ldap_util/kdb5_ldap_services.h (kdb5_ldap_stash_service_password): Update decl.

ticket: new
target_version: 1.6
tags: pullup

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@18813 dc483132-0cff-0310-8789-dd5450dbe970