fix NULL cast to CHAR bug (#160)
fix NULL cast to CHAR bug (#160)



imay/palo,morningman/palo,imay/palo,imay/palo,imay/palo,cyongli/palo,cyongli/palo,morningman/palo,morningman/palo,cyongli/palo,morningman/palo,cyongli/palo,morningman/palo,lingbin/palo,imay/palo,lingbin/palo,morningman/palo,lingbin/palo,imay/palo,cyongli/palo,cyongli/palo,lingbin/palo,lingbin/palo,lingbin/palo