death animation fix

src/actors/enemy/wizard.tscn

@@ -147,6 +147,7 @@ func hurt_timer_timeout():
 	is_hurt = false
 
 func die():
+	is_alive = false
 	$CollisionShape2D.queue_free()
 	$AnimatedSprite.play(\"death\")
 	$Sound_death.play()