RFR: 8284855: Update needed to Cleaners added to jdk.crypto.cryptoki [v5]

[Valerie Peng]

On Fri, 15 Apr 2022 15:50:19 GMT, Xue-Lei Andrew Fan <xuelei at openjdk.org> wrote:

>> This is an effort to fix a problem introduced in the fix for [JDK-8284368](https://bugs.openjdk.java.net/browse/JDK-8284368), which replaced the finalizers in jdk.crypto.cryptoki with Cleaners.  However, there is a problem with the code changes. The Runnables registered with Cleaner refer to the object being registered ('this'). Meaning, the Cleaner mechanism will keep the objects reachable, preventing them from being cleaned and collected.
>
> Xue-Lei Andrew Fan has updated the pull request incrementally with one additional commit since the last revision:
> 
>   add a reference to the clean up method

src/jdk.crypto.cryptoki/unix/native/libj2pkcs11/p11_md.c line 274:

> 272:         ModuleData *moduleData = jlong_to_ptr(ckpNativeData);
> 273: 
> 274:         if (moduleData != NULL) {

The check should be (moduleData->hModule != NULL)?

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PR: https://git.openjdk.java.net/jdk/pull/8248