Move spaces from before comments to within comments

tests/compiler/dart2js_extra/compile_time_constant4_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.
 
 import "package:expect/expect.dart";
 
 const x = "foo";
 const y = "foo";
 const g1 = x
   + "bar"
 ;
 const g2 = x
-  + null   /// 01: compile-time error
+  + null //  /// 01: compile-time error
 ;
 const g3 = x
-  + 499   /// 02: compile-time error
+  + 499 //  /// 02: compile-time error
 ;
 const g4 = x
-  + 3.3   /// 03: compile-time error
+  + 3.3 //  /// 03: compile-time error
 ;
 const g5 = x
-  + true   /// 04: compile-time error
+  + true //  /// 04: compile-time error
 ;
 const g6 = x
-  + false   /// 05: compile-time error
+  + false //  /// 05: compile-time error
 ;
 const g7 = "foo"
-  + x[0]   /// 06: compile-time error
+  + x[0] //  /// 06: compile-time error
 ;
 const g8 = 1
   + x.length
 ;
 const g9 = x == y;
 
 use(x) => x;
 
 main() {
   Expect.equals("foobar", g1);
   Expect.isTrue(g9);
   use(g1);
   use(g2);
   use(g3);
   use(g4);
   use(g5);
   use(g6);
   use(g7);
   use(g8);
 }