[jdk17u-dev] RFR: 8270797: ShortECDSA.java test is not complete

[Martin Doerr]

Clean backport of [JDK-8270797](https://bugs.openjdk.java.net/browse/JDK-8270797)

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Commit messages:
 - Backport 221e4b9c61cd1c9c3f4c037589ba639541532910

Changes: https://git.openjdk.java.net/jdk17u-dev/pull/285/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17u-dev&pr=285&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8270797
  Stats: 16 lines in 1 file changed: 15 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk17u-dev/pull/285.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17u-dev pull/285/head:pull/285

PR: https://git.openjdk.java.net/jdk17u-dev/pull/285