[jdk13u-dev] RFR: 8241248: NullPointerException in sun.security.ssl.HKDF.extract(HKDF.java:93)

[Alexey Bakhtin]

I would like to backport JDK-8241248 to 13u
The patch applied clean
sun/security/ssl and javax/net/ssl tests passed

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Commit messages:
 - Backport 1603ca23422b03157afb2bd1050524465474b60e

Changes: https://git.openjdk.java.net/jdk13u-dev/pull/204/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk13u-dev&pr=204&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8241248
  Stats: 45 lines in 4 files changed: 40 ins; 3 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk13u-dev/pull/204.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk13u-dev pull/204/head:pull/204

PR: https://git.openjdk.java.net/jdk13u-dev/pull/204