[jdk21] RFR: 8312293: SIGSEGV in jfr.internal.event.EventWriter.putUncheckedByte after JDK-8312086

[Markus Grönlund]

8312293: SIGSEGV in jfr.internal.event.EventWriter.putUncheckedByte after JDK-8312086

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Commit messages:
 - Backport 59f66a3b839c5b77c2770fa0bdd76f399d2d86d6

Changes: https://git.openjdk.org/jdk21/pull/147/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21&pr=147&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8312293
  Stats: 3 lines in 2 files changed: 1 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk21/pull/147.diff
  Fetch: git fetch https://git.openjdk.org/jdk21.git pull/147/head:pull/147

PR: https://git.openjdk.org/jdk21/pull/147