hg: jdk/sandbox: 8247736: Shenandoah: assert(_nm->is_alive()) failed: only alive nmethods here

[chris.hegarty at oracle.com]

Changeset: 05558bb80462
Author:    zgu
Date:      2020-06-22 11:40 -0400
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/05558bb80462

8247736: Shenandoah: assert(_nm->is_alive()) failed: only alive nmethods here
Reviewed-by: rkennke, shade

! src/hotspot/share/gc/shenandoah/shenandoahNMethod.cpp
! src/hotspot/share/gc/shenandoah/shenandoahNMethod.hpp