fix: monster target list erasing after player died (opentibiabr#839)

When dying, the spectator's list of players was cleared, that is, if a player died, the target of all others was cleared.
Also fixed the bug that when a player dies near the temple and a creature is in his sight, the creature will not target the player.

src/creatures/creature.cpp

@@ -399,12 +399,18 @@ void Creature::onCreatureAppear(Creature* creature, bool isLogin)
 
 void Creature::onRemoveCreature(Creature* creature, bool)
 {
-  onCreatureDisappear(creature, true);
-  if (creature != this && isMapLoaded) {
-    if (creature->getPosition().z == getPosition().z) {
-      updateTileCache(creature->getTile(), creature->getPosition());
-    }
-  }
+	onCreatureDisappear(creature, true);
+	if (creature != this && isMapLoaded) {
+		if (creature->getPosition().z == getPosition().z) {
+		updateTileCache(creature->getTile(), creature->getPosition());
+		}
+	}
+
+	// Update player from monster target list (avoid memory usage after clean)
+	if (auto monster = getMonster(); monster && monster->getAttackedCreature() == creature) {
+		monster->setAttackedCreature(creature);
+		monster->setFollowCreature(creature);
+	}
 }
 
 void Creature::onCreatureDisappear(const Creature* creature, bool isLogout)

src/creatures/players/player.cpp

@@ -2709,7 +2709,7 @@ bool Player::spawn()
 	}
 
 	SpectatorHashSet spectators;
-	g_game().map.getSpectators(spectators, position, false, true);
+	g_game().map.getSpectators(spectators, position);
 	for (Creature* spectator : spectators) {
 		if (!spectator) {
 			continue;
@@ -2767,9 +2767,6 @@ void Player::despawn()
 		}
 
 		spectator->onRemoveCreature(this, false);
-		// Remove player from spectator target list
-		spectator->setAttackedCreature(nullptr);
-		spectator->setFollowCreature(nullptr);
 	}
 
 	tile->removeCreature(this);