redirecting in IRequestCyleListener.onException

[Douglas Ferguson]

In migrating to wicket 1.5 from 1.4 I used this to redirect to my error page 
when an exception is thrown.
But when I do this it is trying to instantiate a new copy of the page rather 
than using the one I pass in.

                IPageProvider provider = new PageProvider(new 
ClientErrorPage(ex));
                return new RenderPageRequestHandler(provider, 
RedirectPolicy.ALWAYS_REDIRECT);