[jdk17u-dev] RFR: 8297142: jdk/jfr/event/runtime/TestShutdown.java fails on Linux ppc64le and Linux aarch64

[Ralf Schmelter]

This fixes a test which rarely fails on aarch64 and ppc64.

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Commit messages:
 - Backport bde0e35ded82ab5e95452dc8da36c63e084536a2

Changes: https://git.openjdk.org/jdk17u-dev/pull/1675/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1675&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8297142
  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1675.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/1675/head:pull/1675

PR: https://git.openjdk.org/jdk17u-dev/pull/1675