RFR: 8210977: jdk/jfr/event/oldobject/TestThreadLocalLeak.java fails to find ThreadLocalObject

[Erik Gahlin]

Hi,

Could I have a review of a fix that makes a test (hopefully) more stable.

Bug:
https://bugs.openjdk.java.net/browse/JDK-8210977

Webrev:
http://cr.openjdk.java.net/~egahlin/8210977/

Testing:
Ran test multiple times and also verified that the retry mechanism works

Thanks
Erik