This function calls platform specific function
QWindowsPrinterSupport::supportedPaperSizes(), which then called back
to QPrinterInfo::supportedPaperSizes(), causing infinite recursion.
Fixed by providing a proper implementation for querying supported
paper sizes in QWin32PrintEngine - the same implementation was used in
Qt 4.8.
Task-number: QTBUG-24190
Change-Id: I64a2773d83596df19818bf2636f1255943d7851d
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>