Every deed executed by any such commissioner pursuant to the provisions of § 8.01-110 shall specifically set out as nearly as practicable the name of the person on whose behalf the same is executed; provided, that when such deed conveys the right, title or interest of the heirs of a person who is dead it shall be sufficient for such deed to set out that the same is executed on behalf of the heirs of such decedent. But a failure to comply with the provisions of this section shall not affect or invalidate any such deed; and all deeds heretofore executed by any such commissioner in which such persons or heirs are not specifically set out are hereby validated.