[8u] RFR: 8241248: NullPointerException in sun.security.ssl.HKDF.extract(HKDF.java:93)

[Alexey Bakhtin]

Hello,

Could you please review the backport of JDK-8241248 to 8u.

JBS: https://bugs.openjdk.java.net/browse/JDK-8241248
11u patch : https://hg.openjdk.java.net/jdk-updates/jdk11u-dev/rev/5d4535b3a2fe
8u patch : http://cr.openjdk.java.net/~abakhtin/8241248.8u/webrev.v0/

11u patch is not applied clean because of different source file location. The rest is clean

Test from the bug report is passed
sun/security/ssl and javax/net/ssl jtreg tests passed

Regards
Alexey