Acts or proceedings not to be invalidated by vacancies

No act done or proceedings taken under this Act by any authority or other body of the University shall be invalid merely on the ground— (a) of any vacancy or defect in the constitution of the authority or body : or (b) of any defect or irregularity in nomination or appointment of a person acting as a member thereof ; or (c) of any defect or irregularity in such act or proceeding, not affecting the merits of the case.