[jdk18u] RFR: 8284532: Memory leak in BitSet::BitMapFragmentTable in JFR leak profiler [v2]

[Zhengyu Gu]

> A clean and low risk backport to fix a memory leak.

Zhengyu Gu has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:

 - Merge branch 'master' into backport-8284532
 - Backport b55c32f5fe452e2b4e6f912a7d27f979e68ba67e

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

Changes:
  - all: https://git.openjdk.java.net/jdk18u/pull/111/files
  - new: https://git.openjdk.java.net/jdk18u/pull/111/files/05ec683e..ae075421

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk18u&pr=111&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk18u&pr=111&range=00-01

  Stats: 187 lines in 7 files changed: 95 ins; 4 del; 88 mod
  Patch: https://git.openjdk.java.net/jdk18u/pull/111.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk18u pull/111/head:pull/111

PR: https://git.openjdk.java.net/jdk18u/pull/111