RFR: 8315462: [REDO] runtime/NMT/SummarySanityCheck.java failed with "Total committed (MMMMMM) did not match the summarized committed (NNNNNN)"

[Afshin Zafari]

This is a PR for the [original PR](https://github.com/openjdk/jdk/pull/16237).

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Commit messages:
 - 8315462: [REDO] runtime/NMT/SummarySanityCheck.java failed with "Total committed (MMMMMM) did not match the summarized committed (NNNNNN)"

Changes: https://git.openjdk.org/jdk/pull/16262/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16262&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8315462
  Stats: 29 lines in 2 files changed: 19 ins; 4 del; 6 mod
  Patch: https://git.openjdk.org/jdk/pull/16262.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16262/head:pull/16262

PR: https://git.openjdk.org/jdk/pull/16262