Move spaces from before comments to within comments

tests/language/await_for_test.dart

Index: tests/language/await_for_test.dart
diff --git a/tests/language/await_for_test.dart b/tests/language/await_for_test.dart
index 3e5c0c24920f2de36f9c1c7b6f445b27466a8120..2fff1bc140a7ccfe86d37eaa4c7d3043dab72c5a 100644
--- a/tests/language/await_for_test.dart
+++ b/tests/language/await_for_test.dart
@@ -148,7 +148,7 @@ Stream timedCounter(int maxCount) {
     controller.add(counter); // Ask stream to send counter values as event.
     if (counter >= maxCount) {
       timer.cancel();
-      controller.close();    // Ask stream to shut down and tell listeners.
+      controller.close(); //    Ask stream to shut down and tell listeners.
     }
   }