demux: adaptative: fix memory leak

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/demux/adaptative/PlaylistManager.cpp

@@ -60,6 +60,7 @@ PlaylistManager::PlaylistManager( demux_t *p_demux_,
 PlaylistManager::~PlaylistManager   ()
 {
     delete conManager;
+    delete playlist;
     delete streamOutputFactory;
     unsetPeriod();
 }