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

[Zhengyu Gu]

> BitSet::BitMapFragmentTable needs a destructor to cleanup its contents to avoid leaking hashtable entries and bucket array.

Zhengyu Gu has updated the pull request incrementally with one additional commit since the last revision:

  Thomas's comment

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/8148/files
  - new: https://git.openjdk.java.net/jdk/pull/8148/files/dbb5d350..0ae03a26

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=8148&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=8148&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8148.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8148/head:pull/8148

PR: https://git.openjdk.java.net/jdk/pull/8148