Make sure `pd` is always the same object when `getProtectionDomain0` is null.
------------- Commit messages: - chmod - the fix Changes: https://git.openjdk.org/jdk/pull/19752/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19752&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8334394 Stats: 84 lines in 2 files changed: 67 ins; 10 del; 7 mod Patch: https://git.openjdk.org/jdk/pull/19752.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/19752/head:pull/19752 PR: https://git.openjdk.org/jdk/pull/19752
