RFR: 8323820: [MacOS] build failure: non-void function does not return a value

[Joshua Cao]

I can't reproduce the issue since I don't have the right build setup. But hopefully this change is trivial enough to fix the error.

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Commit messages:
 - 8323820: [MacOS] build failure: non-void function does not return a value

Changes: https://git.openjdk.org/jdk/pull/17449/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17449&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8323820
  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/17449.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17449/head:pull/17449

PR: https://git.openjdk.org/jdk/pull/17449