return value from Recorder.perform shouldn't be ignored. See...

return value from Recorder.perform shouldn't be ignored. See http://n4.nabble.com/how-can-a-Recorder-mark-build-as-failure-tp1746654p1746654.html

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@29836 71c3de6d-444a-0410-be80-ed276b4c234a