[jdk21u-dev] RFR: 8322282: Incorrect LoaderConstraintTable::add_entry after JDK-8298468

[Aleksey Shipilev]

Clean backport to fix a JDK 21 regression. The fix is trivial.

Additional testing:
 - [x] Linux x86_64 server fastdebug, `tier{1,2,3}`
 - [ ] Linux AArch64 server fastdebug, `tier{1,2,3}`

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Commit messages:
 - Backport bde650f21e2fa2f7730d3f948105159762e4fdd0

Changes: https://git.openjdk.org/jdk21u-dev/pull/205/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=205&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8322282
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/205.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/205/head:pull/205

PR: https://git.openjdk.org/jdk21u-dev/pull/205