Fix skipWhile.

sdk/lib/async/stream_pipe.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;
 
 /**
  * Utility function to attach a stack trace to an [error]  if it doesn't have
  * one already.
  */
@@ skipping 396 matching lines @@
 class _SkipWhileStream<T> extends _ForwardingStream<T, T> {
   final _Predicate<T> _test;
   bool _hasFailed = false;
 
   _SkipWhileStream(Stream<T> source, bool test(T value))
       : this._test = test, super(source);
 
   void _handleData(T inputEvent, _EventOutputSink<T> sink) {
     if (_hasFailed) {
       sink._sendData(inputEvent);
+      return;
     }
     bool satisfies;
     try {
       satisfies = _test(inputEvent);
     } catch (e, s) {
       sink._sendError(_asyncError(e, s));
       // A failure to return a boolean is considered "not matching".
       _hasFailed = true;
       return;
     }
@@ skipping 94 matching lines @@
 
   void handleError(error, EventSink<T> sink) {
     _handleError(error, sink);
   }
 
   void handleDone(EventSink<T> sink) {
     _handleDone(sink);
   }
 }