Move spaces from before comments to within comments

tests/language_strong/string_interpolation9_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.
 //
 // Almost valid string interpolation syntax.
 
 main() {
   var x;
 
-  x = "$";    /// 1: compile-time error
-  x = "x$";   /// 2: compile-time error
-  x = "$x$";  /// 3: compile-time error
-  x = "$$x";  /// 4: compile-time error
-  x = "$ ";   /// 5: compile-time error
+  x = "$"; //   /// 1: compile-time error
+  x = "x$"; //  /// 2: compile-time error
+  x = "$x$"; // /// 3: compile-time error
+  x = "$$x"; // /// 4: compile-time error
+  x = "$ "; //  /// 5: compile-time error
 
-  x = '$';    /// 6: compile-time error
-  x = 'x$';   /// 7: compile-time error
-  x = '$x$';  /// 8: compile-time error
-  x = '$$x';  /// 9: compile-time error
-  x = '$ ';   /// 10: compile-time error
+  x = '$'; //   /// 6: compile-time error
+  x = 'x$'; //  /// 7: compile-time error
+  x = '$x$'; // /// 8: compile-time error
+  x = '$$x'; // /// 9: compile-time error
+  x = '$ '; //  /// 10: compile-time error
 
-  x = """$""";    /// 11: compile-time error
-  x = """x$""";   /// 12: compile-time error
-  x = """$x$""";  /// 13: compile-time error
-  x = """$$x""";  /// 14: compile-time error
-  x = """$ """;   /// 15: compile-time error
+  x = """$"""; //   /// 11: compile-time error
+  x = """x$"""; //  /// 12: compile-time error
+  x = """$x$"""; // /// 13: compile-time error
+  x = """$$x"""; // /// 14: compile-time error
+  x = """$ """; //  /// 15: compile-time error
 
-  x = '''$''';    /// 16: compile-time error
-  x = '''x$''';   /// 17: compile-time error
-  x = '''$x$''';  /// 18: compile-time error
-  x = '''$$x''';  /// 19: compile-time error
-  x = '''$ ''';   /// 20: compile-time error
+  x = '''$'''; //   /// 16: compile-time error
+  x = '''x$'''; //  /// 17: compile-time error
+  x = '''$x$'''; // /// 18: compile-time error
+  x = '''$$x'''; // /// 19: compile-time error
+  x = '''$ '''; //  /// 20: compile-time error
 
   return x;
 }