According to MSDN, the zero value of ICONDIRENTRY bHeight and bWidth
fields mean a maximum icon size 256 pixels. So QtIcoHandler::option()
should return 256 instead of 0 pixels for such icons. Also there is
fixed wrong seek offset at the second call on this method.
http://blogs.msdn.com/b/oldnewthing/archive/2010/10/18/10077133.aspx
Task-number: QTBUG-48103
Change-Id: I99f0c9720fd58889045b0c73c51498f2065b0b91
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
Reviewed-by: aavit <eirik.aavitsland@theqtcompany.com>