coding competition

[neotokyo]

for(uint32 i=0; i!=max_door_type;i++)
{
const Door* door = GetDoorDBID(i);
if(door == 0 || door->db_id == 0 || strcasecmp(door->zone_name, zone_name))
continue;
if(door->door_id == door_id && strcasecmp(door->zone_name, zone_name) == 0)
return door;
}

whats wrong with these few lines of code ...?
winner gets a free ticket to new delhi, india.

(and btw, this is not to diss anybody, but perhaps people will learn to code if we get the most commonly errors communicated)
*edit: feel free to post my errors too, if you find some.*