Fixes:    Possible crash on remote desktop
Fixes:    Possible crash on remote desktop

Task:     http://bugreports.qt.nokia.com/browse/QTBUG-11568
Details:  On some system we can create a EVR vide orenderer but
          then the gestService might return 0. So we now test for that.
		  Tested on our setup it now works as expected and doesn't
		  crash any more.

shadeslayer/phonon-gstreamer,KDE/phonon-directshow,KDE/phonon-quicktime,KDE/phonon-directshow,shadeslayer/phonon-gstreamer,KDE/phonon-xine,KDE/phonon-mmf,KDE/phonon-gstreamer,KDE/phonon-xine,KDE/phonon-xine,KDE/phonon-gstreamer,KDE/phonon-waveout,shadeslayer/phonon-gstreamer