Core/Unit: consistency fix

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

@@ -122,7 +122,7 @@ m_damageType(DIRECT_DAMAGE), m_attackType(dmgInfo.attackType)
 
 void DamageInfo::ModifyDamage(int32 amount)
 {
-    amount = std::max(amount, -static_cast<int32>(m_damage));
+    amount = std::max(amount, -static_cast<int32>(GetDamage()));
     m_damage += amount;
 }