RFR: JDK-8293093 NPE in P11KeyStore.getID [v2]

[Mark Powers]

> https://bugs.openjdk.org/browse/JDK-8293093

Mark Powers has updated the pull request incrementally with one additional commit since the last revision:

  add getIDNullSafe

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/10823/files
  - new: https://git.openjdk.org/jdk/pull/10823/files/25b192ed..43697109

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=10823&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=10823&range=00-01

  Stats: 17 lines in 1 file changed: 7 ins; 0 del; 10 mod
  Patch: https://git.openjdk.org/jdk/pull/10823.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10823/head:pull/10823

PR: https://git.openjdk.org/jdk/pull/10823