Fix typo in test.

tests/lib/async/stream_controller_test.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // Test the basic StreamController and StreamController.singleSubscription.
 library stream_controller_test;
 
 import "package:expect/expect.dart";
 import "package:async_helper/async_helper.dart";
 import 'dart:async';
@@ skipping 424 matching lines @@
   Expect.equals(c.stream, c.stream);
   c = new StreamController.broadcast(sync: false, onListen:(){});
   Expect.equals(c.stream, c.stream);
   c = new StreamController.broadcast(sync: true, onListen:(){});
   Expect.equals(c.stream, c.stream);
 }
 
 void testCancelThrow() {
   asyncStart();
   asyncStart();
+  asyncStart();
   StreamController c = new StreamController(onCancel: () {
     asyncEnd();
     throw "ERROR";
   });
   c.add(1);
   c.add(2);
   c.add(3);
   Future done = c.close();
   StreamSubscription sub;
   sub = c.stream.listen((v) {
@@ skipping 41 matching lines @@
 }
 
 void testCancelThrow3() {
   asyncStart();
   asyncStart();
   asyncStart();
   asyncStart();
   asyncStart();
   asyncStart();
   StreamController c2 = new StreamController(onCancel: () {
-    asyneEnd();
+    asyncEnd();
     throw "ERROR2";
   });
   c2.add(1);
   c2.add(2);
   var done2 = c2.close();
   done2.catchError(fail).whenComplete(asyncEnd);  // Should not get error;
 
   StreamController c = new StreamController(onCancel: () {
     asyncEnd();
     throw "ERROR1";
   });
   var sub;
   sub = c.stream.listen((v) {
     Expect.equals(1, v);
     Future f = sub.cancel();
     f.catchError((e) {
       // Only the last error ends up here.
       Expect.equals("ERROR1", e);
       asyncEnd();
     });
   });
   var addDone = c.addStream(c2.stream);
   addDone.catchError(fail).whenComplete(asyncEnd);  // Error must not go here.
   c.done.catchError(fail).whenComplete(asyncEnd); // Error must not go here.
 }
 
 main() {
+  asyncStart();
   testMultiController();
   testSingleController();
   testExtraMethods();
   testClosed();
   testStreamEquals();
   testCancelThrow();
   testCancelThrow2();
   testCancelThrow3();
+  asyncEnd();
 }