Unit/CalcAbsorbResist: Sanctified Wrath should pierce absorb effects

by P-Kito; retrieved from #15027

The paladin talent Sanctified Wrath should pierce absorb effects.

(cherry picked from commit b8762d8)

src/server/game/Entities/Unit/Unit.cpp

@@ -1639,6 +1639,9 @@ void Unit::CalcAbsorbResist(Unit* victim, SpellSchoolMask schoolMask, DamageEffe
 
     RoundToInterval(auraAbsorbMod, 0.0f, 100.0f);
 
+    uint32 absorbIgnoringDamage = CalculatePct(dmgInfo.GetDamage(), auraAbsorbMod);
+    dmgInfo.ModifyDamage(-absorbIgnoringDamage);
+
     // We're going to call functions which can modify content of the list during iteration over it's elements
     // Let's copy the list so we can prevent iterator invalidation
     AuraEffectList vSchoolAbsorbCopy(victim->GetAuraEffectsByType(SPELL_AURA_SCHOOL_ABSORB));
@@ -1671,9 +1674,6 @@ void Unit::CalcAbsorbResist(Unit* victim, SpellSchoolMask schoolMask, DamageEffe
         if (defaultPrevented)
             continue;
 
-        // Apply absorb mod auras
-        AddPct(currentAbsorb, -auraAbsorbMod);
-
         // absorb must be smaller than the damage itself
         currentAbsorb = RoundToInterval(currentAbsorb, 0, int32(dmgInfo.GetDamage()));
 
@@ -1722,8 +1722,6 @@ void Unit::CalcAbsorbResist(Unit* victim, SpellSchoolMask schoolMask, DamageEffe
         if (defaultPrevented)
             continue;
 
-        AddPct(currentAbsorb, -auraAbsorbMod);
-
         // absorb must be smaller than the damage itself
         currentAbsorb = RoundToInterval(currentAbsorb, 0, int32(dmgInfo.GetDamage()));
 
@@ -1752,6 +1750,8 @@ void Unit::CalcAbsorbResist(Unit* victim, SpellSchoolMask schoolMask, DamageEffe
         }
     }
 
+    dmgInfo.ModifyDamage(absorbIgnoringDamage);
+
     // split damage auras - only when not damaging self
     if (victim != this)
     {