[lworld] RFR: 8331362: [lworld] JDK-8331217 breaks the build

[David Simms]

Avoid preview feature code

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Commit messages:
 - 8331362: [lworld] JDK-8331217 breaks the build

Changes: https://git.openjdk.org/valhalla/pull/1088/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1088&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8331362
  Stats: 16 lines in 1 file changed: 13 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/valhalla/pull/1088.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1088/head:pull/1088

PR: https://git.openjdk.org/valhalla/pull/1088