RFR: 8342962: [s390x] TestOSRLotsOfLocals.java crashes

[Amit Kumar]

We are on thin ice with the `TestOSRLotsOfLocals` test. Before it breaks, I'd like to provide the fix. :-)

Testing : Tier1 test with fastdebug vm.

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Commit messages:
 - fix

Changes: https://git.openjdk.org/jdk/pull/21703/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21703&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8342962
  Stats: 21 lines in 1 file changed: 18 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/21703.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21703/head:pull/21703

PR: https://git.openjdk.org/jdk/pull/21703