407246 - Test harness checked results in callbacks ignored.

Reverted commit 1155901cbb6f49439636242017504f0eadd35bb0.
407326 - Test Failure: org.eclipse.jetty.client.HttpClientStreamTest.testInputStreamResponseListenerFailedBeforeResponse[0].

Instead of using port 0, now using an ephemeral port that is not listening anymore.