server: Don't bother with default entry points for objects that don't even return an fd.
diff --git a/server/process.c b/server/process.c
index 1724a24..2e9fd59 100644
--- a/server/process.c
+++ b/server/process.c
@@ -84,11 +84,11 @@
 {
     NULL,                        /* get_poll_events */
     process_poll_event,          /* poll_event */
-    no_flush,                    /* flush */
-    no_get_fd_type,              /* get_fd_type */
-    no_queue_async,              /* queue_async */
+    NULL,                        /* flush */
+    NULL,                        /* get_fd_type */
+    NULL,                        /* queue_async */
     NULL,                        /* reselect_async */
-    no_cancel_async              /* cancel async */
+    NULL                         /* cancel async */
 };
 
 /* process startup info */