Integrated: 8324786: validate-source fails after JDK-8042981

[Daniel D. Daugherty]

A trivial fix for validate-source.

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Commit messages:
 - 8324786: validate-source fails after JDK-8042981

Changes: https://git.openjdk.org/jdk/pull/17599/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17599&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8324786
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/17599.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17599/head:pull/17599

PR: https://git.openjdk.org/jdk/pull/17599