[ospec] don't count succesful async test termination as a test success
[ospec] don't count succesful async test termination as a test success

pygy/mithril.js,impinball/mithril.js,impinball/mithril.js,MithrilJS/mithril.js,MithrilJS/mithril.js,pygy/mithril.js,lhorie/mithril.js,lhorie/mithril.js,barneycarroll/mithril.js,barneycarroll/mithril.js