[jdk17u-dev] RFR: 8364235: Fix for JDK-8361447 breaks the alignment requirements for GuardedMemory

[Goetz Lindenmaier]

I backport this for parity with 17.0.18-oracle.

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Commit messages:
 - Backport 078d0d4968e26bb7a15417f1c4e891869c69dc6c

Changes: https://git.openjdk.org/jdk17u-dev/pull/4069/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=4069&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8364235
  Stats: 14 lines in 1 file changed: 8 ins; 2 del; 4 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/4069.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/4069/head:pull/4069

PR: https://git.openjdk.org/jdk17u-dev/pull/4069