[jdk21u] RFR: 8313874: JNI NewWeakGlobalRef throws exception for null arg

Wed Aug 23 10:17:25 UTC 2023

Hi all,

This pull request contains a clean backport of commit [028b3ae1](https://github.com/openjdk/jdk/commit/028b3ae1b162bd8f7c340bfa6e9487ca83697955) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.

The commit being backported was authored by Oli Gillespie on 10 Aug 2023 and was reviewed by David Holmes, Kim Barrett and Aleksey Shipilev.

Thanks!

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Commit messages:
 - Backport 028b3ae1b162bd8f7c340bfa6e9487ca83697955

Changes: https://git.openjdk.org/jdk21u/pull/88/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21u&pr=88&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8313874
  Stats: 11 lines in 2 files changed: 10 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk21u/pull/88.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u.git pull/88/head:pull/88

PR: https://git.openjdk.org/jdk21u/pull/88