[v3] libstdc++/28514

[Paolo Carlini]

Thanks Benjamin,

a minor nit:

>-		__tmp += __mod<_UInt32Type, 1, 0, 0>(__gen()) * __factor;
>-		__factor *= _Shift<_UIntType, 32>::__value;
>+		__tmp += __detail::__mod<__detail::_UInt32Type, 1, 0, 0>(__gen()) * __factor;
>  
>
overlong line?

Paolo.