Hello,please review this test bug fix. Test failed because of staled threads left after execution. Added try-with-resources statements to make sure test closes it's resources. Also as test is overall quite old-fashioned I've done some refactoring (hope now it looks better).
JBS: https://bugs.openjdk.java.net/browse/JDK-8164533 Webrev:http://cr.openjdk.java.net/~snikandrova/8164533/webrev.00/ <http://cr.openjdk.java.net/%7Esnikandrova/8164533/webrev.00/>
Thank you, Svetlana
