Integrated: 8260524: validate-source fails on test/jdk/jdk/jfr/event/gc/detailed/TestGCLockerEvent.java

[Daniel D.Daugherty]

Trivial fix to make validate-source pass in Mach5 Tier1.

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Commit messages:
 - 8260524: validate-source fails on test/jdk/jdk/jfr/event/gc/detailed/TestGCLockerEvent.java

Changes: https://git.openjdk.java.net/jdk/pull/2265/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=2265&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8260524
  Stats: 17 lines in 8 files changed: 5 ins; 2 del; 10 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2265.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2265/head:pull/2265

PR: https://git.openjdk.java.net/jdk/pull/2265