fix thread priority code, this has never worked until today

libs/apr/threadproc/unix/thread.c

@@ -174,6 +174,11 @@ APR_DECLARE(apr_status_t) apr_thread_create(apr_thread_t **new,
     }
 
     if ((stat = pthread_create((*new)->td, temp, dummy_worker, (*new))) == 0) {
+		if (attr->priority) {
+			pthread_t *thread = (*new)->td;
+			pthread_setschedprio(*thread, attr->priority);
+		}
+
         return APR_SUCCESS;
     }
     else {