git: openjdk/jdk-sandbox: parttimenerd_jfr_cpu_time_sampler4: Avoid mutex assertion failure

[duke]

Changeset: 74d7afb4
Branch: parttimenerd_jfr_cpu_time_sampler4
Author:    Jaroslav Bachorik <j.bachorik at gmail.com>
Date:      2024-08-27 13:52:40 +0000
URL:       https://git.openjdk.org/jdk-sandbox/commit/74d7afb41048862cef438575ef024e9a868eaacc

Avoid mutex assertion failure

! src/hotspot/share/jfr/periodic/sampling/jfrCPUTimeThreadSampler.cpp
! src/hotspot/share/jfr/periodic/sampling/jfrThreadSampler.cpp