RFR: CODETOOLS-7903070: jcstress: Typo in Classic_01_DiningPhilosophers sample

[Aleksey Shipilev]

SoundCloud found this little oddity. Let's fix it.

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Commit messages:
 - Fix

Changes: https://git.openjdk.java.net/jcstress/pull/109/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jcstress&pr=109&range=00
  Issue: https://bugs.openjdk.java.net/browse/CODETOOLS-7903070
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jcstress/pull/109.diff
  Fetch: git fetch https://git.openjdk.java.net/jcstress pull/109/head:pull/109

PR: https://git.openjdk.java.net/jcstress/pull/109