RFR: 8313795: Fix for JDK-8313564 breaks ppc and s390x builds

[Christoph Langer]

The fix for JDK-8313564 breaks the ppc and s390x builds. This should repair it.

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Commit messages:
 - JDK-8313795

Changes: https://git.openjdk.org/jdk/pull/15165/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15165&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8313795
  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/15165.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15165/head:pull/15165

PR: https://git.openjdk.org/jdk/pull/15165