RFR: 8257642: CipherByteBufferOverwriteTest copyright issue

[Anthony Scarpino]

It's missing a comma

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Commit messages:
 - fix copyright

Changes: https://git.openjdk.java.net/jdk/pull/1601/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1601&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8257642
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1601.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1601/head:pull/1601

PR: https://git.openjdk.java.net/jdk/pull/1601