RFR: 8330133: libj2pkcs11.so crashes on some pkcs#11 v3.0 libraries

[Valerie Peng]

It is reported that some PKCS#11 library/vendor reports major version 3, but doesn't implement the C_GetInterface function and the resulting 'interface' variable value may be NULL and cause unexpected crash later.

This PR would check the 'interface' variable value to be non-NULL.
Reproducing this would require certain 3rd party PKCS#11 library, and thus the noreg-hard label.

Thanks~
FYI, I will be on vacation starting 4/17 and will address the review comments upon return. 
Valerie

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Commit messages:
 - 8330133: libj2pkcs11.so crashes on some pkcs#11 v3.0 libraries

Changes: https://git.openjdk.org/jdk/pull/18789/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18789&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8330133
  Stats: 7 lines in 2 files changed: 2 ins; 0 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/18789.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18789/head:pull/18789

PR: https://git.openjdk.org/jdk/pull/18789