RFR: 8364316: JFR: Incorrect validation of mirror fields [v2]

[Erik Gahlin]

> Could I please have a review of a PR that fixes a bug in the mirror field validation?
> 
> Testing: jdk/jdk/jfr
> 
> Thanks
> Erik

Erik Gahlin has updated the pull request incrementally with one additional commit since the last revision:

  Simplify field discovery

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/26539/files
  - new: https://git.openjdk.org/jdk/pull/26539/files/75be1d4a..2947c54a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=26539&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=26539&range=00-01

  Stats: 58 lines in 3 files changed: 5 ins; 33 del; 20 mod
  Patch: https://git.openjdk.org/jdk/pull/26539.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26539/head:pull/26539

PR: https://git.openjdk.org/jdk/pull/26539