Integrated: 8286435: JDK-8284316 caused validate-source to fail in Tier1

[Daniel D.Daugherty]

A trivial to solve JDK-8284316 caused validate-source to fail in Tier1.

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Commit messages:
 - 8286435: JDK-8284316 caused validate-source to fail in Tier1

Changes: https://git.openjdk.java.net/jdk/pull/8607/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=8607&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8286435
  Stats: 3 lines in 3 files changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8607.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8607/head:pull/8607

PR: https://git.openjdk.java.net/jdk/pull/8607