Acts not to be invalidated by vacancy, informality, etc.

No act done or proceedings taken under this Act by 1[the Authority] or a committee appointed by 2[the Authority] shall be invalidated merely on the ground of-

1. (a) any vacancy of a Member or any defect in the constitution or reconstitution of 3[the Authority] or a committee thereof; or
2. (b) any defect or irregularity in the appointment of a person as a Member of 4the Authority] or of a committee thereof; or
3. (c) any defect or irregularity in such act or proceedings, not affecting the substance.