From 7a0eaaff4bc86a35f755fa2cfc12b08d1e278ffc Mon Sep 17 00:00:00 2001
From: Pierre Curto <pierre.curto@gmail.com>
Date: Mon, 30 Jan 2012 18:04:24 +0100
Subject: [PATCH] #queue(): allow unspecified callbacks

---
 lib/async.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/async.js b/lib/async.js
index c862008ae..286c5635d 100644
--- a/lib/async.js
+++ b/lib/async.js
@@ -594,7 +594,7 @@
             empty: null,
             drain: null,
             push: function (data, callback) {
-                q.tasks.push({data: data, callback: callback});
+                q.tasks.push({data: data, callback: typeof callback === 'function' ? callback : null});
                 if(q.saturated && q.tasks.length == concurrency) q.saturated();
                 async.nextTick(q.process);
             },