[jdk17u-dev] RFR: 8291830: jvmti/RedefineClasses/StressRedefine failed: assert(!is_null(v)) failed: narrow klass value can never be zero

[Martin Doerr]

Backport of [JDK-8291830](https://bugs.openjdk.org/browse/JDK-8291830).

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Commit messages:
 - Backport fb6fd03233b0eb001e2995d20a079b6af31d2b9b

Changes: https://git.openjdk.org/jdk17u-dev/pull/1478/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1478&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8291830
  Stats: 18 lines in 5 files changed: 6 ins; 4 del; 8 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1478.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/1478/head:pull/1478

PR: https://git.openjdk.org/jdk17u-dev/pull/1478