Don't work bar report item edit.

Incorrect value "992328" for "gid" field: must be between 0 and 65535.

I have huge DB, there is itemids > 65535

In popup_bitem.php
'gid' => array(T_ZBX_INT, O_OPT, P_SYS, BETWEEN(0,65535), null),

Should be changed to:
~'gid' => array(T_ZBX_INT, O_OPT, P_SYS, DB_ID, null),