--- libev/ev.c	2018/12/21 06:57:09	1.488
+++ libev/ev.c	2018/12/29 14:23:20	1.489
@@ -5005,12 +5005,6 @@
 {
   struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
 
-  if (expect_false (!once))
-    {
-      cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
-      return;
-    }
-
   once->cb  = cb;
   once->arg = arg;