Fix undefined deref with chosenSet
Fix undefined deref with chosenSet

eg. Meloetta-P does not have a set in the setdex

Zarel/honko-damagecalc,Honko/honko-damagecalc,Zarel/honko-damagecalc,Zarel/honko-damagecalc,Honko/honko-damagecalc,MagiaSN/honko-damagecalc,MagiaSN/honko-damagecalc,MagiaSN/honko-damagecalc,Honko/honko-damagecalc