# File lib/rack/protection/escaped_params.rb, line 49
      def call(env)
        request  = Request.new(env)
        get_was  = handle(request.GET)
        post_was = handle(request.POST) rescue nil
        app.call env
      ensure
        request.GET.replace  get_was  if get_was
        request.POST.replace post_was if post_was
      end