Description:
------------
Basically same code as php.net manual example gives error:
Warning: No policy specified for blaah...; assigning "default" .


Reproduce code:
---------------
..

$attributes=KRB5_KDB_REQUIRES_PRE_AUTH|KRB5_KDB_DISALLOW_PROXIABLE;
$options = array(KADM5_PRINC_EXPIRE_TIME => 0,
                            KADM5_PW_EXPIRATION => 0,
                            KADM5_POLICY => "default",
                            KADM5_ATTRIBUTES => $attributes);

return kadm5_modify_principal($this->krb_con,"principal/default@EXAMPLE.COM",$options);


Expected result:
----------------
no errors

Actual result:
--------------
warning, that no policy was specified and a default policy was assigned