RFR: 8315362: NMT: summary diff reports threads count incorrectly [v2]

[Evgeny Ignatenko]

> 8315362: NMT: summary diff reports threads count incorrectly

Evgeny Ignatenko has updated the pull request incrementally with one additional commit since the last revision:

  Review comments

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/15490/files
  - new: https://git.openjdk.org/jdk/pull/15490/files/df6cc1ff..b912bb66

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=15490&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=15490&range=00-01

  Stats: 5 lines in 2 files changed: 0 ins; 1 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/15490.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15490/head:pull/15490

PR: https://git.openjdk.org/jdk/pull/15490