if KLibLoader deletes the backend before we do better have the pointer be set to 0 automatically
if KLibLoader deletes the backend before we do better have the pointer be set
to 0 automatically

svn path=/trunk/KDE/kdelibs/phonon/; revision=630636

sandsmark/phonon-visualization-gsoc,sandsmark/phonon-visualization-gsoc,sandsmark/phonon-visualization-gsoc,sandsmark/phonon-visualization-gsoc