loplugin:cstylecast, involving pointer to incomplete type

Change-Id: If2758fa42b484a5afbe0d358a3d4533c68189697

vcl/unx/gtk/window/gtksalframe.cxx

@@ -669,7 +669,7 @@ gboolean ensure_dbus_setup( gpointer data )
 
         // Create menu model and action group attached to this frame.
         GMenuModel* pMenuModel = G_MENU_MODEL( g_lo_menu_new() );
-        GActionGroup* pActionGroup = ( ( GActionGroup* ) g_lo_action_group_new( reinterpret_cast< gpointer >( pSalFrame ) ) );
+        GActionGroup* pActionGroup = reinterpret_cast<GActionGroup*>(g_lo_action_group_new( reinterpret_cast< gpointer >( pSalFrame ) ));
 
         // Generate menu paths.
         ::Window windowId = GDK_WINDOW_XID( gdkWindow );