[jdk17u-dev] RFR: 8294217: Assertion failure: parsing found no loops but there are some

[Goetz Lindenmaier]

I backport this for parity with 17.0.7-oracle.

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Commit messages:
 - Backport 8c472e481676ed0ef475c4989477d5714880c59e

Changes: https://git.openjdk.org/jdk17u-dev/pull/1024/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1024&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8294217
  Stats: 111 lines in 2 files changed: 96 ins; 1 del; 14 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1024.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/1024/head:pull/1024

PR: https://git.openjdk.org/jdk17u-dev/pull/1024