slideshow: convert new to ::Create to get initial ref-counting right.

Change-Id: I513dacfa0dd2e902437578611b6d39575f2e7314
diff --git a/slideshow/source/engine/shapes/viewmediashape.cxx b/slideshow/source/engine/shapes/viewmediashape.cxx
index afddec0..f026b21 100644
--- a/slideshow/source/engine/shapes/viewmediashape.cxx
+++ b/slideshow/source/engine/shapes/viewmediashape.cxx
@@ -471,20 +471,20 @@ namespace slideshow
#else
                            if( avmedia::IsModel(rMimeType) )
                            {
                                mpEventHandlerParent.reset(new vcl::Window(pWindow, WB_NOBORDER|WB_NODIALOGCONTROL));
                                mpEventHandlerParent.reset(VclPtr<vcl::Window>::Create(pWindow, WB_NOBORDER|WB_NODIALOGCONTROL));
                                mpEventHandlerParent->SetPosSizePixel( Point( aAWTRect.X, aAWTRect.Y ),
                                                           Size( aAWTRect.Width, aAWTRect.Height ) );
                                mpEventHandlerParent->EnablePaint(false);
                                mpEventHandlerParent->Show();
                                SystemWindowData aWinData = OpenGLContext::generateWinData(mpEventHandlerParent.get(), false);
                                mpMediaWindow.reset(new SystemChildWindow(mpEventHandlerParent.get(), 0, &aWinData));
                                mpMediaWindow.reset(VclPtr<SystemChildWindow>::Create(mpEventHandlerParent.get(), 0, &aWinData));
                                mpMediaWindow->SetPosSizePixel( Point( 0, 0 ),
                                                           Size( aAWTRect.Width, aAWTRect.Height ) );
                            }
                            else
#endif
                            {
                                mpMediaWindow.reset( new SystemChildWindow( pWindow, WB_CLIPCHILDREN ) );
                                mpMediaWindow.reset( VclPtr<SystemChildWindow>::Create( pWindow, WB_CLIPCHILDREN ) );
                                mpMediaWindow->SetPosSizePixel( Point( aAWTRect.X, aAWTRect.Y ),
                                                           Size( aAWTRect.Width, aAWTRect.Height ) );
                            }