8310549: avoid potential leaks in KeystoreImpl.m related to JNU_CHECK_EXCEPTION early returns
------------- Commit messages: - Backport 7da3f1999fc5d1b9162443d97dfae7fe7b04dfc5 Changes: https://git.openjdk.org/jdk21/pull/86/files Webrev: https://webrevs.openjdk.org/?repo=jdk21&pr=86&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8310549 Stats: 6 lines in 1 file changed: 4 ins; 0 del; 2 mod Patch: https://git.openjdk.org/jdk21/pull/86.diff Fetch: git fetch https://git.openjdk.org/jdk21.git pull/86/head:pull/86 PR: https://git.openjdk.org/jdk21/pull/86
