fix($timeout): allow calling $timeout.cancel() with undefined

This is how it worked in rc9, before refactoring $defer into $timeout.

1 files changed, 5 insertions, 0 deletions

diff --git a/test/ng/timeoutSpec.js b/test/ng/timeoutSpec.js
index 19db1227..5ee99d98 100644
--- a/test/ng/timeoutSpec.js
+++ b/test/ng/timeoutSpec.js
@@ -142,5 +142,10 @@ describe('$timeout', function() {
       expect($timeout.cancel(promise1)).toBe(false);
       expect($timeout.cancel(promise2)).toBe(true);
     }));
+
+
+    it('should not throw a runtime exception when given an undefined promise', inject(function($timeout) {
+      expect($timeout.cancel()).toBe(false);
+    }));
   });
 });