[Future possession dependent on death without heirs;

effect of birth of posthumous child.] A future possession depending upon the contingency of the death of a person without heirs shall be revoked by the birth of a posthumous son or daughter of said person capable of succeeding him. History: Laws 1851-1852, p. 376; C.L. 1865, ch. 44, § 29; C.L. 1884, § 1428; C.L. 1897, § 2048; Code 1915, § 4768; C.S. 1929, § 117-112; 1941 Comp., § 75-116; 1953 Comp., § 70-1-19.