Review request 6830721

[Alan Bateman]

6830721: (fc) test/java/nio/channels/AsynchronousFileChannel/Basic.java 
intermittent failure

Sherman - this is another intermittent failure of this test. The cancel 
sub-test isn't correctly handling the case that the write completes 
before it is cancelled. It's hard to duplicate but when the write 
completes successfully the test fails. Trivial update to the test; 
webrev is here:
  http://cr.openjdk.java.net/~alanb/6830721/webrev.00/

Thanks,
Alan.