Better fix for problem with empty database names in the mysql.db table

    ACL_DB db;

    update_hostname(&db.host,get_field(&mem, table,0));

    db.db=get_field(&mem, table,1);

    if (!db.db || !db.db[0])

    if (!db.db)

    {

      sql_print_error("Found an entry in the 'db' table with empty database name; Skipped");

      continue;

    }

    db.user=get_field(&mem, table,2);

    db.access=get_access(table,3);

    db.access=fix_rights_for_db(db.access);