Move spaces from before comments to within comments

tests/compiler/dart2js_extra/inference_super_set_call_test.dart

 // Copyright (c) 2013, 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.
 
 // Regression test for dart2js: we incorrectly modeled `super.x = rhs` as a
 // call and not an assignment, so the type of the expression was incorrectly
 // assumed to be the return type of the setter rather than the type of the rhs.
 import 'package:expect/expect.dart';
 
 abstract class A {
   set x(v) {}
   set z(v) {}
   set y(v) { return 'hi';}
 }
 
 class S extends A {
-  var _x;      // was bad: inferred as null, than [null | int]
+  var _x; //      was bad: inferred as null, than [null | int]
   var _y = ''; // was bad: inferred as String, rather than [String | int]
-  var _z;      // was ok : inferred as [null | int]
+  var _z; //      was ok : inferred as [null | int]
 
   set x(v) {
     _x = super.x = v;
   }
 
   set z(v) {
     super.z = v;
     _z = v;
   }
 
   set y(v) {
     _y = super.y = v;
   }
 
   get isXNull => _x == null;
   get isZNull => _z == null;
 }
 
 main() {
   var s = new S()
     ..x = 2
     ..y = 2
     ..z = 2;
-  Expect.equals(false, s.isXNull);      // was incorrectly optimized to 'true'
+  Expect.equals(false, s.isXNull); //      was incorrectly optimized to 'true'
   Expect.equals(false, s._y is String); // was incorrectly optimized to 'true'
-  Expect.equals(false, s.isZNull);      // prints false
+  Expect.equals(false, s.isZNull); //      prints false
 }