ASARE v. BROBBEY AND OTHERS, Practice and procedure—Pleadings—Omission—Failure to plead non-compliance with statutory provision—Failure to register a mortgage deed relating to land under land Registry Act—Deed invalid by non-registration—Issue of non-registration was not pleaded but raised in course of address—Whether the court can entertain the issue—Land Registry Act, 1962 (Act 122), s. 24 (1)—Supreme [High] Court (Civil Procedure) Rules, 1954 (L.N. 140A), Order 19, r. 16.