[jdk21u-dev] RFR: 8313226: Redundant condition test in X509CRLImpl

[Daniel Hu]

Clean backport. Minor fix removing a redundant if check condition in X509CRLImpl. GHA passes.

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Commit messages:
 - Backport 28be34c1b9179e21c8ec5d2f9b05e3f842bb30a1

Changes: https://git.openjdk.org/jdk21u-dev/pull/2344/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2344&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8313226
  Stats: 3 lines in 1 file changed: 0 ins; 1 del; 2 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2344.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2344/head:pull/2344

PR: https://git.openjdk.org/jdk21u-dev/pull/2344