Fix typo in _DoneStreamSubscription.asFuture.

sdk/lib/async/stream_impl.dart

 // Copyright (c) 2012, 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.
 
 part of dart.async;
 
 /** Abstract and private interface for a place to put events. */
 abstract class _EventSink<T> {
   void _add(T data);
   void _addError(Object error, StackTrace stackTrace);
@@ skipping 758 matching lines @@
       if (!isPaused && !_isSent) {
         _schedule();
       }
     }
   }
 
   Future cancel() => null;
 
   Future asFuture([futureValue]) {
     _Future result = new _Future();
-    _onDone = () { result._completeWithValue(null); }
+    _onDone = () { result._completeWithValue(null); };
     return result;
   }
 
   void _sendDone() {
     _state &= ~_SCHEDULED;
     if (isPaused) return;
     _state |= _DONE_SENT;
     _zone.runGuarded(_onDone);
   }
 }
@@ skipping 276 matching lines @@
       _Future<bool> hasNext = _futureOrPrefetch;
       _clear();
       hasNext._complete(false);
       return;
     }
     _subscription.pause();
     _futureOrPrefetch = null;
     _state = _STATE_EXTRA_DONE;
   }
 }