pkg/scheduled_test: handle null currentSchedule due to timeout

pkg/scheduled_test/lib/scheduled_test.dart

Index: pkg/scheduled_test/lib/scheduled_test.dart
diff --git a/pkg/scheduled_test/lib/scheduled_test.dart b/pkg/scheduled_test/lib/scheduled_test.dart
index b6ba30d7e2d9513c6b8aabf8da510d93d0c750ed..ad34112f1558720cfdd4f4ef3dca442813112002 100644
--- a/pkg/scheduled_test/lib/scheduled_test.dart
+++ b/pkg/scheduled_test/lib/scheduled_test.dart
@@ -233,8 +233,10 @@ void _test(String description, void body(), Function testFn) {
   testFn(description, () {
     var completer = new Completer();
 
+    Schedule localSchedule;

[nweiz, 2014/04/07 18:02:21]

Don't type-annotate local variables.

[kevmoo, 2014/04/08 01:29:33]

Done.

+
     Chain.capture(() {
-      _currentSchedule = new Schedule();
+      localSchedule = _currentSchedule = new Schedule();

[nweiz, 2014/04/07 18:02:21]

We generally avoid multiple assignments on the same line.

[kevmoo, 2014/04/08 01:29:33]

Done.

       return currentSchedule.run(() {
         if (_setUpFn != null) _setUpFn();
         body();
@@ -247,7 +249,7 @@ void _test(String description, void body(), Function testFn) {
           unittest.registerException(error, new Chain.forTrace(stackTrace));
         }
       }).then(completer.complete);
-    }, onError: (error, chain) => currentSchedule.signalError(error, chain));
+    }, onError: (error, chain) => localSchedule.signalError(error, chain));
 
     return completer.future;
   });