fix exploid HEADER_CG_CHARACTER_SELECT

Vulnerabilitate noua , exploit de tip DoS . [ HEADER_CG_CHARACTER_SELECT ]

1.intra in sursa game --> game/src (input_login.cpp) si cauta :

db_clientdesc->DBPacket(HEADER_GD_PLAYER_LOAD, d->GetHandle(), &player_load_packet, sizeof(TPlayerLoadPacket));

*Inlocuie cu :

// fix exploid by kapa3a
    if (player_load_packet.player_id == 0)
    {
    sys_err("invalid player_id from account %d\n",c_r.id);
    d->DelayedDisconnect(0);
    return;
    }
    db_clientdesc->DBPacket(HEADER_GD_PLAYER_LOAD, d->GetHandle(), &player_load_packet, sizeof(TPlayerLoadPacket));
// fix exploid by kapa3a


2.Cauta :

void CInputLogin::CharacterSelect(LPDESC d, const char * data)


*Deasupra la :

TPlayerLoadPacket player_load_packet;

*Adauga :

    if (!c_r.players[pinfo->index].dwID) // FIXME
{
    sys_err("No player id for login %s", c_r.login);
    d->SetPhase(PHASE_CLOSE);
    return;
    }

3.Cauta :

void CInputLogin::ChangeName(LPDESC d, const char * data)

*Deasupra la :

    if (!c_r.players[p->index].bChangeName)
        return;

*Adauga :

    if (p->index >= PLAYER_PER_ACCOUNT) // FIXME overflow
    {
        sys_err("index overflow %d, login: %s", p->index, c_r.login);
        d->SetPhase(PHASE_CLOSE);
        return;
    }