Set values for field->def and field->def_length to zero - they are populated only from deprecated api function mysql_list_fields.
Set values for field->def and field->def_length to zero - they are populated only from
deprecated api function mysql_list_fields.

MariaDB/mariadb-connector-c,ottok/mariadb-connector-c,MariaDB/mariadb-connector-c,ottok/mariadb-connector-c,MariaDB/mariadb-connector-c,ottok/mariadb-connector-c