git: openjdk/loom: fibers: fixed 8275001: hotspot/jtreg/serviceability/jvmti/negative/thrstat04/thrstat04.java SEGV in java_lang_VirtualThread::is_instance

[duke]

Changeset: 991d2764
Author:    Serguei Spitsyn <serguei.spitsyn at oracle.com>
Date:      2021-10-19 08:47:04 +0000
URL:       https://git.openjdk.java.net/loom/commit/991d27640a15105616442732f2c7f2bb47f7e081

fixed 8275001: hotspot/jtreg/serviceability/jvmti/negative/thrstat04/thrstat04.java SEGV in java_lang_VirtualThread::is_instance

! src/hotspot/share/prims/jvmtiExport.cpp