The probates of all instruments taken on and after February 7, 1945, in accordance with the provisions of N.C. Gen. Stat. § 47-12, as amended by section 11 of Chapter 73 of the Session Laws of 1945 and section 1? of Chapter 991 of the Session Laws of 1947 and as further amended by sections 2 and 3 of Chapter 815 of the Session Laws of 1949, are hereby in all respects validated; provided, however, that this section shall not apply to pending litigation. (1949, c. 815, s. 3.)