RFR 8220513: Wrapper Key may get deleted when closing sessions in SunPKCS11 crypto provider

[Martin Balao]

Hi,

I'd like to propose a fix for JDK-8220513 [1]:

 * http://cr.openjdk.java.net/~mbalao/webrevs/8220513/8220513.webrev.00/

Testing:

 * No regressions found in sun/security/pkcs11

 * This bug was exposed by TestTLS12 test, in jdk11u [2]. I'm working in
re-introducing this test to JDK (after JDK-8217835 deleted it). An issue
[4] has to be worked out first though. I'll followup on this.

Thanks,
Martin.-

--
[1] - https://bugs.openjdk.java.net/browse/JDK-8220513
[2] -
http://hg.openjdk.java.net/jdk-updates/jdk11u/file/d17a1764a0f3/test/jdk/sun/security/pkcs11/fips/TestTLS12.java
[3] - https://bugs.openjdk.java.net/browse/JDK-8217835
[4] -
https://mail.openjdk.java.net/pipermail/security-dev/2019-March/019469.html