git: openjdk/loom: fibers: Fix incorrect assert

[duke]

Changeset: 6c191da7
Author:    Ron Pressler <ron.pressler at oracle.com>
Date:      2020-08-17 15:56:55 +0000
URL:       https://git.openjdk.java.net/loom/commit/6c191da7

Fix incorrect assert

! src/hotspot/share/runtime/continuation.cpp
! src/hotspot/share/runtime/frame.cpp