[L2Server] Polearm bug

[Master Toma]

1. Equip lance (lancia)
2. Summon 20 orc(orc)
3. Attack them (pole attack on multiple targets, untill correct)
4. When first batch monster died, do click on some monster alive.
5. Begin attack again (now only 1 monster is affected by pole) (NOK)

so basically second target is buggy

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OK case with original server: https://www.youtube.com/watch?v=WVz2Q9mzlBo&feature=youtu.be
NOK case: https://www.youtube.com/watch?v=eUfwBNuyQmA&feature=youtu.be