Joined Cases C-611/10 and C-612/10: Judgment of the Court (Grand Chamber) of 12 June 2012 (reference for a preliminary ruling from the Bundesfinanzhof — Germany) — Waldemar Hudziński v Agentur für Arbeit Wesel — Familienkasse (C-611/10), Jarosław Wawrzyniak v Agentur für Arbeit Mönchengladbach — Familienkasse (C-612/10) (Social security for migrant workers — Regulation (EEC) No 1408/71 — Articles 14(1)(a) and 14a(1)(a) — Articles 45 TFEU and 48 TFEU — Temporary work in a Member State other than that in which work is normally carried out — Family benefits — Applicable legislation — Possibility for child benefit to be granted by the Member State in which the temporary work is carried out but which is not the competent State — Application of a rule of national law against overlapping of benefits which excludes that benefit in the case where a comparable benefit is received in another State)