[lworld] Integrated: 8327637: [lworld] runtime/valhalla/inlinetypes/PreloadCircularityTest.java fails with --enable-preview

[Frederic Parain]

Fix test_50 by making output analysis more precise.

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Commit messages:
 - Fix test_50 by making output analysis more precise

Changes: https://git.openjdk.org/valhalla/pull/1050/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1050&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8327637
  Stats: 6 lines in 1 file changed: 3 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/valhalla/pull/1050.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1050/head:pull/1050

PR: https://git.openjdk.org/valhalla/pull/1050