git: openjdk/jdk21u: master: 8313874: JNI NewWeakGlobalRef throws exception for null arg

[Paul Hohensee]

Changeset: 42aec914
Author:    Oli Gillespie <ogillespie at openjdk.org>
Committer: Paul Hohensee <phh at openjdk.org>
Date:      2023-08-29 13:53:10 +0000
URL:       https://git.openjdk.org/jdk21u/commit/42aec9148858b415f8a580e1750b7bcd90e58053

8313874: JNI NewWeakGlobalRef throws exception for null arg

Backport-of: 028b3ae1b162bd8f7c340bfa6e9487ca83697955

! src/hotspot/share/prims/jni.cpp
! test/hotspot/jtreg/runtime/jni/ReturnJNIWeak/ReturnJNIWeak.java