Core/SpellScripts: Add possibility to access real damage/healing done by SpellScript from AfterHit hooks.

src/server/game/Spells/Spell.cpp

@@ -1239,6 +1239,7 @@ void Spell::DoAllEffectOnTarget(TargetInfo *target)
 
         int32 gain = caster->HealBySpell(unitTarget, m_spellInfo, addhealth, crit);
         unitTarget->getHostileRefManager().threatAssist(caster, float(gain) * 0.5f, m_spellInfo);
+        m_healing = gain;
     }
     // Do damage and triggers
     else if (m_damage > 0)
@@ -1273,6 +1274,7 @@ void Spell::DoAllEffectOnTarget(TargetInfo *target)
             AuraEffect* aurEff = m_spellAura->GetEffect(1);
             aurEff->SetAmount(CalculatePctU(aurEff->GetAmount(), damageInfo.damage));
         }
+        m_damage = damageInfo.damage;
     }
     // Passive spell hits/misses or active spells only misses (only triggers)
     else

src/server/game/Spells/SpellScript.h

@@ -287,10 +287,12 @@ class SpellScript : public _SpellScript
         // returns: target of current effect if it was GameObject otherwise NULL
         GameObject* GetHitGObj();
         // setter/getter for for damage done by spell to target of spell hit
+        // returns damage calculated before hit, and real dmg done after hit
         int32 GetHitDamage();
         void SetHitDamage(int32 damage);
         void PreventHitDamage() { SetHitDamage(0); }
         // setter/getter for for heal done by spell to target of spell hit
+        // returns healing calculated before hit, and real dmg done after hit
         int32 GetHitHeal();
         void SetHitHeal(int32 heal);
         void PreventHitHeal() { SetHitHeal(0); }