If two estates in the same property shall unite in the same person in his individual capacity, the lesser estate shall be merged into the greater. (Orig. Code 1863, § 2253; Code 1868, § 2245; Code 1873, § 2271; Code 1822, § 2271; Civil Code 1895, § 3106; Civil Code 1910, § 3682; Code 1933, § 85-710.)