Integrated: 8288270: Tier1 build failures after JDK-8287178

[Hai-May Chao]

Please review the small fix in comment.

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Commit messages:
 - 8288270: Tier1 build failures after JDK-8287178

Changes: https://git.openjdk.org/jdk/pull/9135/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=9135&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8288270
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/9135.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9135/head:pull/9135

PR: https://git.openjdk.org/jdk/pull/9135