RFR: 8346777: Add missing const declarations and rename variables [v2]

[Christian Hagedorn]

> This simple patch adds some missing `const` and applies variable renamings and parameter reorderings
> 
> Thanks,
> Christian

Christian Hagedorn has updated the pull request incrementally with one additional commit since the last revision:

  update

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/23434/files
  - new: https://git.openjdk.org/jdk/pull/23434/files/502aa810..8ce9d89b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=23434&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=23434&range=00-01

  Stats: 44 lines in 2 files changed: 37 ins; 0 del; 7 mod
  Patch: https://git.openjdk.org/jdk/pull/23434.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23434/head:pull/23434

PR: https://git.openjdk.org/jdk/pull/23434