Core/Units: Fixed crash caused by a gameobject dealing damage to units with SPELL_AURA_SPLIT_DAMAGE

Closes TrinityCore#31874

Author: Shauren

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

@@ -5198,7 +5198,7 @@ void Unit::SendSpellNonMeleeDamageLog(SpellNonMeleeDamage const* log)
 {
     WorldPackets::CombatLog::SpellNonMeleeDamageLog packet;
     packet.Me = log->target->GetGUID();
-    packet.CasterGUID = log->attacker->GetGUID();
+    packet.CasterGUID = Object::GetGUID(log->attacker);
     packet.SpellID = log->SpellID;
     packet.Damage = log->damage;
     if (log->damage > log->target->GetHealth())