Testing new MSVC warning flags ([JDK-8388932](https://bugs.openjdk.org/browse/JDK-8388932)) revealed some local initialized unused variables in jdk.accessibility.
--------- - [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). ------------- Commit messages: - JDK-8389357 Changes: https://git.openjdk.org/jdk/pull/32088/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=32088&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8389357 Stats: 11 lines in 3 files changed: 0 ins; 6 del; 5 mod Patch: https://git.openjdk.org/jdk/pull/32088.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/32088/head:pull/32088 PR: https://git.openjdk.org/jdk/pull/32088
