From 3c901575b86c5cd3dbee09f1046fa0161d1be72c Mon Sep 17 00:00:00 2001
From: Yanis Benson <yanis.benson@gmail.com>
Date: Sun, 7 Apr 2013 20:47:28 +0400
Subject: [PATCH] shouldCall now handles empty argument

---
 cupoftea.js | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/cupoftea.js b/cupoftea.js
index cc2333c..b310c3f 100644
--- a/cupoftea.js
+++ b/cupoftea.js
@@ -165,12 +165,14 @@ var Callbacks = function (runStack) {
             var oldRunStack = currentRunStack;
             currentRunStack = runStack;
             outstandingCallbacks.remove(callbackId);
-            try {
-                var result = f.apply(this, arguments);
-            } catch (e) {
-                results(e);
-                expectedExceptions.push(e);
-                throw e;
+            if(f){
+              try {
+                  var result = f.apply(this, arguments);
+              } catch (e) {
+                  results(e);
+                  expectedExceptions.push(e);
+                  throw e;
+              }
             }
 
             if (outstandingCallbacks.isEmpty()) {