do not leak the d-pointer
do not leak the d-pointer

Matthias, may i backport it to 4.2?
CCMAIL: 372ea4eca737a13cd010ee806d4ce7b98ee71550@kde.org

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