title: Calling flowRedirect after returning from subflow throws exception
body: <pre><code>&lt;subflow-state id="callingSubflow" subflow="cz/fe/ui"&gt;
      &lt;transition on="finish" to="goToResult"/&gt;
  &lt;/subflow-state&gt;
  
  &lt;end-state id="goToResult" view="flowRedirect:cz/fe/ui/detail/flow"/&gt;
  </code></pre>
  
  <p>With this configuration, after completing some webflow logic in subflow, flowRedirect does not happen, only the original page gets refreshed and I get "java.lang.IllegalStateException: No active FlowSession to access; this FlowExecution has ended" exception.</p>
  
  <p>When I don't go to "goToResult" state from subflow, flowRedirect works as expected.</p>
  
  <p>When I don't use flowRedirect in the end state, the expected page is displayed correctly.</p>
  
  <p>But when I use combination of these both, only refresh &amp; exception happens.</p>
  
  <p>Using Spring Web Flow 2.0.9</p>