RFR 8252754: Hash code calculation of JfrStackTrace is inconsistent

[Erik Gahlin]

Looks good.

Erik

> On 3 Sep 2020, at 12:57, Jaroslav Bachorík <jaroslav.bachorik at datadoghq.com> wrote:
> 
> Please, review this small patch to bring back consistency between
> JfrStackTrace::record_safe and JfrStackTrace::record_thread stack
> trace hashcode calculation.
> 
> JIRA: https://bugs.openjdk.java.net/browse/JDK-8252754
> Webrev: http://cr.openjdk.java.net/~jbachorik/8252754/dev/webrev/
> 
> Tested with tier1 and JFR tests and all expected tests are passing.
> 
> Cheers,
> 
> -JB-