[AI] Spell Type (1024) InCombatBuff were spam casting

[noudess]

The AI code for spell casting (engaged):

• two forms of innate/priority0 spells
• in combat buffs
• heals/bene
• everything else

The first spell to get a sucess roll wins for that trip through the loop.

InCombatBuffs is 50% per spell to be chosen. Hopwever, the code did not have a CanStack check. So mobs with a spell list that included InCombatBuffs is severely compromised due to one spell getting cast over and over, on top if itself, 50% of the loops through if the spell list has no innates/priority0 spells.

Added a simple CanStack check and these mobs behave much better.

(Also changed the brace style to match the surrounding code)

[Akkadius]

Nice catch!