[jdk17u-dev] RFR: 8285696: AlgorithmConstraints:permits not throwing IllegalArgumentException when 'alg' is null

[Goetz Lindenmaier]

I backport this for parity with 17.0.5-oracle.

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

Depends on: https://git.openjdk.org/jdk17u-dev/pull/450

Commit messages:
 - Backport 47951655acacba515c0d69f5192257664f887dba

Changes: https://git.openjdk.org/jdk17u-dev/pull/462/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17u-dev&pr=462&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8285696
  Stats: 3 lines in 1 file changed: 3 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/462.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/462/head:pull/462

PR: https://git.openjdk.org/jdk17u-dev/pull/462