RFR: 8372586: Crashes on ppc64(le) after JDK-8371368

[Markus Grönlund]

Greetings,

Follow-up adjustment to JDK-8371368.

Testing: aarch64 with -XX:+PreserveFramePointer

Thanks
Markus

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Commit messages:
 - 8372586

Changes: https://git.openjdk.org/jdk/pull/28509/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28509&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8372586
  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/28509.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28509/head:pull/28509

PR: https://git.openjdk.org/jdk/pull/28509