Case C-12/14: Judgment of the Court (Fourth Chamber) of 3 March 2016 — European Commission v Republic of Malta (Failure of a Member State to fulfil obligations — Social security — Regulation (EEC) No 1408/71 — Article 46b — Regulation (EC) No 883/2004 — Article 54 — Old-age pensions — Rules against overlapping — Persons entitled to an old-age pension under the rules of one Member State and to a civil-service pension under the rules of another Member State — Reduction in the amount of the old-age pension)