[jdk21u-dev] RFR: 8331626: unsafe.cpp:162:38: runtime error in index_oop_from_field_offset_long - applying non-zero offset 4563897424 to null pointer

[Martin Doerr]

Clean backport of [JDK-8331626](https://bugs.openjdk.org/browse/JDK-8331626).

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Commit messages:
 - Backport 23a72a1f2f651d5e8e9a0eb1e75e2b44572a13da

Changes: https://git.openjdk.org/jdk21u-dev/pull/685/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=685&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8331626
  Stats: 7 lines in 1 file changed: 0 ins; 4 del; 3 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/685.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/685/head:pull/685

PR: https://git.openjdk.org/jdk21u-dev/pull/685