Patch submitted upstream at,

  http://tracker.nagios.org/view.php?id=534

by user ovidiu_stanila. Confirmed to work by at least one other user,
travissidelinger. Applied to fix Gentoo bug #530640.

diff --git a/base/workers.c b/base/workers.c
index 881e434..d1e1f8d 100644
--- a/base/workers.c
+++ b/base/workers.c
@@ -285,6 +285,8 @@ static void destroy_job(struct wproc_job *job)
 	case WPJOB_SVC_EVTHANDLER:
 	case WPJOB_GLOBAL_HOST_EVTHANDLER:
 	case WPJOB_HOST_EVTHANDLER:
+	case WPJOB_HOST_PERFDATA:
+	case WPJOB_SVC_PERFDATA:
 		/* these require nothing special */
 		break;
 	case WPJOB_CALLBACK:
@@ -763,6 +765,11 @@ static int handle_worker_result(int sd, int events, void *arg)
 			run_job_callback(job, &wpres, 0);
 			break;
 
+		case WPJOB_HOST_PERFDATA:
+		case WPJOB_SVC_PERFDATA:
+			/* these require nothing special */
+			break;
+
 		default:
 			logit(NSLOG_RUNTIME_WARNING, TRUE, "Worker %d: Unknown jobtype: %d\n", wp->pid, job->type);
 			break;