Explicitly call clear on the shared pointer in the playlistinterface destructor

src/libtomahawk/playlist/trackproxymodel.h

@@ -32,7 +32,7 @@ Q_OBJECT
 
 public:
     explicit TrackProxyModel ( QObject* parent = 0 );
-
+    
     virtual TrackModel* sourceModel() const { return m_model; }
     virtual void setSourceTrackModel( TrackModel* sourceModel );
     virtual void setSourceModel( QAbstractItemModel* model );

src/libtomahawk/playlistinterface.cpp

@@ -30,6 +30,7 @@ PlaylistInterface::PlaylistInterface ( QObject *parent )
 
 PlaylistInterface::~PlaylistInterface()
 {
+    m_sharedPtr.clear();
 }
 
 result_ptr