416251 ProxyHTTPToSPDYConnection now sends a 502 to the client if it receives a rst frame from the upstream spdy server

jetty-spdy/spdy-http-server/src/main/java/org/eclipse/jetty/spdy/server/proxy/ProxyHTTPSPDYConnection.java

@@ -207,7 +207,7 @@ public class ProxyHTTPSPDYConnection extends HttpConnection implements HttpParse
         @Override
         public void goAway(GoAwayInfo goAwayInfo, Callback handler)
         {
-            getEndPoint().close();
+            ProxyHTTPSPDYConnection.this.close();
             handler.succeeded();
         }
     }