RFR: 8344079: Minor fixes and cleanups to compiler lint-related code [v4]

[Archie Cobbs]

> Please review these changes with some minor lint-related fixes and cleanups.
> 
> See [JDK-8344079](https://bugs.openjdk.org/browse/JDK-8344079) for a more detailed description.

Archie Cobbs has updated the pull request incrementally with one additional commit since the last revision:

  Address review comment by being less Streamy.

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/22056/files
  - new: https://git.openjdk.org/jdk/pull/22056/files/7cb7aa0c..af342035

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22056&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22056&range=02-03

  Stats: 22 lines in 1 file changed: 8 ins; 1 del; 13 mod
  Patch: https://git.openjdk.org/jdk/pull/22056.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22056/head:pull/22056

PR: https://git.openjdk.org/jdk/pull/22056