RFR: 8317581: [s390x] Multiple test failure with LockingMode=2

[Amit Kumar]

Fixes the test failure and straight jvm crash. 


jdk/jshell/ClassMembersTest.java
java/lang/invoke/condy/CondyWrongType.java
java/lang/invoke/condy/CondyWithGarbageTest.java

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Commit messages:
 - fix jvm crash

Changes: https://git.openjdk.org/jdk/pull/16136/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16136&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8317581
  Stats: 4 lines in 2 files changed: 1 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/16136.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16136/head:pull/16136

PR: https://git.openjdk.org/jdk/pull/16136