[jdk17u-dev] RFR: 8294310: compare.sh fails on macos after JDK-8293550

[Paul Hohensee]

Clean backport of required follow-on to 17u backport of [JDK-8293550](https://bugs.openjdk.org/browse/JDK-8293550).

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Commit messages:
 - Backport b9eeec2b6b8f97d2ba33462b27d091f918067f78

Changes: https://git.openjdk.org/jdk17u-dev/pull/944/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=944&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8294310
  Stats: 14 lines in 3 files changed: 10 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/944.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/944/head:pull/944

PR: https://git.openjdk.org/jdk17u-dev/pull/944