Fix another location having the same does-not-compile problem

Signed-off-by: Rémi Denis-Courmont <rdenis@simphalempin.com>

modules/gui/skins2/src/vlcproc.cpp

@@ -616,7 +616,7 @@ int VlcProc::controlWindow( struct vout_window_t *pWnd,
 
                 // Post a resize vout command
                 CmdResizeVout *pCmd =
-                    new CmdResizeVout( pThis->getIntf(), pWnd->handle,
+                    new CmdResizeVout( pThis->getIntf(), pWnd->handle.hwnd,
                                        i_width, i_height );
                 AsyncQueue *pQueue = AsyncQueue::instance( pThis->getIntf() );
                 pQueue->push( CmdGenericPtr( pCmd ) );