authYubiKey: Fix use of &new, which isn't correct for PHP5.
authYubiKey: Fix use of &new, which isn't correct for PHP5.

Thanks to Patrick Honing for reporting this bug.
vivekrajenderan/simplesamlphp,tectronics/simplesamlphp,tectronics/simplesamlphp,tectronics/simplesamlphp,vivekrajenderan/simplesamlphp,vivekrajenderan/simplesamlphp,vivekrajenderan/simplesamlphp,tectronics/simplesamlphp,vivekrajenderan/simplesamlphp,tectronics/simplesamlphp