calling GearmanJobResult.jobSucceeded() for a failed job incorrectly returns true

Bug Description

The Job Result created when a WORK_FAIL event is received incorrectly sets the job success value to true

case WORK_FAIL:
LOG.log(Level.FINER, "job " + this + " has received a work " +
"fail event");
validateJobHandle(event.getDataComponentValue(
GearmanPacket.DataComponentName.JOB_HANDLE));
jobResult = jobResult.addJobResult(
new GearmanJobResultImpl(handle, true, null, null, null,
-1, -1));
isComplete = true;
break;