hg: loom/loom: Removed an invalid assert. Fixed FIBER_MOUNT handling code when single stepping a Fiber in and around yield code. It no longer asserts, although where it resumes single stepping might be a bit confusing to the user.

[chris.plummer at oracle.com]

Changeset: 8c96ad06d55c
Author:    cjplummer
Date:      2019-03-04 18:32 -0800
URL:       http://hg.openjdk.java.net/loom/loom/rev/8c96ad06d55c

Removed an invalid assert. Fixed FIBER_MOUNT handling code when single stepping a Fiber in and around yield code. It no longer asserts, although where it resumes single stepping might be a bit confusing to the user.

! src/jdk.jdwp.agent/share/native/libjdwp/threadControl.c