git: openjdk/loom: fibers: Clear thawed frame's arguments' bits in bitmap to prevent a leak

[duke]

Changeset: a51e1100
Author:    Ron Pressler <ron.pressler at oracle.com>
Date:      2021-10-19 16:59:38 +0000
URL:       https://git.openjdk.java.net/loom/commit/a51e1100bce24347fb5c3c916630762b103e0f0b

Clear thawed frame's arguments' bits in bitmap to prevent a leak

! src/hotspot/share/runtime/continuation.cpp
! test/jdk/ProblemList-vthread.txt
+ test/jdk/jdk/internal/vm/Continuation/ClassUnloading.java