Missing curly braces around og_membership in cod_bof.module

the _cod_bof_get_gid function is currently missing curly braces on the og_membership table.

function _cod_bof_get_gid($time_slot_id) {
  return db_query('SELECT g.gid FROM og_membership g, field_data_field_slot_types_time_slot t
        WHERE g.etid = t.field_slot_types_time_slot_target_id AND t.entity_id = :timeslotid', array(':timeslotid' => $time_slot_id))->fetchField();
}