[jdk17u] RFR: 8273165: GraphKit::combine_exception_states fails with "matching stack sizes" assert

[Tobias Hartmann]

Backport of [JDK-8273165](https://bugs.openjdk.java.net/browse/JDK-8273165). Applies cleanly. Approval is pending.

Thanks,
Tobias

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Commit messages:
 - 8273165: GraphKit::combine_exception_states fails with "matching stack sizes" assert

Changes: https://git.openjdk.java.net/jdk17u/pull/95/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17u&pr=95&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8273165
  Stats: 6 lines in 1 file changed: 6 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk17u/pull/95.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17u pull/95/head:pull/95

PR: https://git.openjdk.java.net/jdk17u/pull/95