Integrated: 8324161: validate-source fails after JDK-8275338

[Daniel D. Daugherty]

A trivial fix to the copyright line in test/jdk/jdk/jfr/event/io/TestSerializationMisdeclarationEvent.java.

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Commit messages:
 - 8324161: validate-source fails after JDK-8275338

Changes: https://git.openjdk.org/jdk/pull/17490/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17490&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8324161
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/17490.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17490/head:pull/17490

PR: https://git.openjdk.org/jdk/pull/17490