RFR: 8312329: Minimal build failure after JDK-8311541

[Jie Fu]

Please review this trivial fix.
Thanks.

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Commit messages:
 - 8312329: Minimal build failure after JDK-8311541

Changes: https://git.openjdk.org/jdk/pull/14929/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14929&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8312329
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/14929.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14929/head:pull/14929

PR: https://git.openjdk.org/jdk/pull/14929