Core/Unit: send original caster in heal packet log

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

@@ -8601,7 +8601,7 @@ void Unit::SendHealSpellLog(Unit* victim, uint32 SpellID, uint32 Damage, uint32
     // we guess size
     WorldPacket data(SMSG_SPELLHEALLOG, 8 + 8 + 4 + 4 + 4 + 4 + 1 + 1);
     data << victim->GetPackGUID();
-    data << GetPackGUID();
+    data << healInfo.GetHealer()->GetPackGUID();
     data << uint32(SpellID);
     data << uint32(Damage);
     data << uint32(OverHeal);