Move spaces from before comments to within comments

tests/language_strong/cyclic_constructor_test.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.
 
 class A {
   A.a() : this.b();
   A.b()
-    : this.a()  /// 01: compile-time error
+    : this.a() // /// 01: compile-time error
   ;
   A.c() : this.b();
 }
 
 main() {
   new A.a();
   new A.b();
   new A.c();
 }