[jdk17u-dev] RFR: 8330524: Linux ppc64le compile warning with clang in os_linux_ppc.cpp

[Matthias Baesken]

Backport of 8330524

-------------

Commit messages:
 - Backport e3a9226e0d481ea1ad9747ec9d40f40bbcb650f3

Changes: https://git.openjdk.org/jdk17u-dev/pull/2597/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2597&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8330524
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2597.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2597/head:pull/2597

PR: https://git.openjdk.org/jdk17u-dev/pull/2597