Fixed proxy test.

jetty-client/src/test/java/org/eclipse/jetty/client/ProxyFakeTunnelTest.java

@@ -67,10 +67,19 @@ public class ProxyFakeTunnelTest extends ProxyTunnellingTest
     }
 
     protected void stopProxy() throws Exception
+    {
+        if (_proxySocket != null)
         {
             _proxySocket.close();
             _proxyThread.interrupt();
         }
+    }
+
+    @Override
+    public void testExternalProxy() throws Exception
+    {
+        // Do not execute this test, since it won't hit the fake proxy
+    }
 
     static class FakeProxy extends Thread
     {