Eliminate the possibility to leave freed ISeq
in active_units
Hoping to fix: http://ci.rvm.jp/results/trunk-mjit@silicon-docker/2311375
Eliminate the possibility to leave freed ISeq
in active_units
Hoping to fix:
http://ci.rvm.jp/results/trunk-mjit@silicon-docker/2311375