fix(Core): Correct packet structure for combat stop messages. (#19434)

* Init.

* Reviewed changes.

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

@@ -3051,10 +3051,12 @@ void Unit::SendMeleeAttackStop(Unit* victim)
 
     WorldPacket data(SMSG_ATTACKSTOP, (8 + 8 + 4));
     data << GetPackGUID();
+
     if (victim)
     {
+        uint8 nowDead = victim->isDead();
         data << victim->GetPackGUID();
-        data << victim->isDead();
+        data << nowDead;
     }
     SendMessageToSet(&data, true);
     LOG_DEBUG("entities.unit", "WORLD: Sent SMSG_ATTACKSTOP");

src/server/game/Handlers/CombatHandler.cpp

@@ -86,10 +86,12 @@ void WorldSession::SendAttackStop(Unit const* enemy)
 {
     WorldPacket data(SMSG_ATTACKSTOP, (8 + 8 + 4)); // we guess size
     data << GetPlayer()->GetPackGUID();
+
     if (enemy)
     {
+        uint8 nowDead = enemy->isDead();
         data << enemy->GetPackGUID();               // must be packed guid
-        data << enemy->isDead();
+        data << nowDead;
     }
     SendPacket(&data);
 }