ICE on g++ 3.3.2, 3.3.3, and 3.3.4

[Andrew Pinski]

The code reduces to:
struct QgsScaleCalculator
{
     QgsScaleCalculator(int dpi = 0,
                        QgsScaleCalculator mapUnits = 0);
};
struct CanvasProperties
{

CanvasProperties (): scaleCalculator (new QgsScaleCalculator) {}
   QgsScaleCalculator * scaleCalculator;

};

But this code is invalid and we should reject it.  This is PR 5247.

Thanks,
Andrew Pinski