§ 477. Settlement of actions for personal injury. If, in an action commenced to recover damages for a personal injury or for death as the result of a personal injury, an attorney having or claiming to have a lien for services performed or to be performed who shall have appeared for the person or persons having or claiming to have a right of action for such injury or death, no settlement or adjustment of such action shall be valid, unless consented to in writing by such attorney and by the person or persons for whom he shall have appeared, or approved by an order of the court in which such action is brought.