git: openjdk/mobile: 8234613: JavaThread can escape back to Java from an ongoing handshake

[duke]

Changeset: 71ec3b69
Author:    Patricio Chilano Mateo <pchilanomate at openjdk.org>
Date:      2019-11-26 15:21:37 +0000
URL:       https://git.openjdk.java.net/mobile/commit/71ec3b69

8234613: JavaThread can escape back to Java from an ongoing handshake

Check again if we have a pending/in-progress handshake operation after executing ~ThreadInVMForHandshake()

Reviewed-by: coleenp, dcubed, dholmes, rehn

! src/hotspot/share/runtime/handshake.cpp