git: openjdk/loom: fibers: DoContinueSingleStepTest/libDoContinueSingleStepTest.cpp fixed.

[duke]

Changeset: 6e9d3137
Author:    lmesnik <leonid.mesnik at oracle.com>
Date:      2021-03-05 17:02:13 +0000
URL:       https://git.openjdk.java.net/loom/commit/6e9d3137

DoContinueSingleStepTest/libDoContinueSingleStepTest.cpp fixed.

! test/hotspot/jtreg/serviceability/jvmti/vthread/DoContinueSingleStepTest/libDoContinueSingleStepTest.cpp