Appeal dismissed, without costs, for mootness, upon the *839ground that the leased premises were voluntarily vacated by the tenant in June, 1975, and subsequent to the effective date of the Vacancy Decontrol Law (L 1971, ch 371, as amd by L 1974, ch 576) which provides for the decontrol of leaseholds vacated after June 30, 1971 (Local Emergency Housing Rent Control Law, § 5; L 1962, ch 21, § 1, subd 5, as amd).