Move spaces from before comments to within comments

tests/isolate/function_send_test.dart

 // Copyright (c) 2014, 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.
 
 import "dart:isolate";
 import "dart:async";
 import "package:expect/expect.dart";
 import "package:async_helper/async_helper.dart";
 
 void toplevel(port, message) { port.send("toplevel:$message"); }
@@ skipping 153 matching lines @@
     asyncEnd();
   });
 
   // Try sending through other isolate.
   asyncStart();
   echoPort((v) { Expect.equals(0, v); })
     .then((p) {
       try {
         p.send(func);
       } finally {
-        p.send(0);   // Closes echo port.
+        p.send(0); //   Closes echo port.
       }
     })
     .then((p) => throw "unreachable 2",
           onError: (e, s) {asyncEnd();});
 }
 
 void nop(_) {}
 
 void callFunc(message) {
   message[0](message[1], message[2]);
 }