Merge "Fix NPE on devices that don't have NFC." into ics-mr1

        /* use getSystemService() instead of just instantiating to take

         * advantage of the context's cached NfcManager & NfcAdapter */

        NfcManager manager = (NfcManager) context.getSystemService(Context.NFC_SERVICE);

        if (manager == null) {

            // NFC not available

            return null;

        }

        return manager.getDefaultAdapter();

    }