[spell] Damage Immunity: Frost (or immunity forst?)

[przemratajczak]

MaNGOS: 9913

SD2 1683

UDB 390

Bug:

Aura 40 (SPELL_AURA_DAMAGE_IMMUNITY) does not work with forst spells. What is weird tested the same with fire one and seems working fine.

HowToReproduce:

1) find NPC and force him to .cast self 34306

2) tested with frostbolt (116) and cone of cold(120). both dealed dmg.

those "technical" auras are pretty imprtant to avoid hacks in scripting projects ;-)