Fix snafu

Author: miscco

stl/inc/vector

@@ -3437,7 +3437,7 @@ _CONSTEXPR20 _OutIt _Copy_vbool(_VbIt _First, _VbIt _Last, _OutIt _Dest) {
     const auto _DestEnd = _Dest + (_Last - _First);
 
     const auto _FirstSourceMask = static_cast<_Vbase>(-1) << _First._Myoff;
-    const auto _FirstDestMask   = static_cast<_Vbase>(-1) >> (_Dest._Myoff == 0 ? 0 : (_VBITS - _Dest._Myoff));
+    const auto _FirstDestMask   = _Dest._Myoff == 0 ? 0 : (static_cast<_Vbase>(-1) >> (_VBITS - _Dest._Myoff));
     const auto _LastDestMask    = static_cast<_Vbase>(-1) << _DestEnd._Myoff;
 
     const bool _IsSingleBlockSource = _VbFirst == _VbLast;