Move spaces from before comments to within comments

tests/lib/convert/utf8_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";
 import 'dart:convert';
 import 'unicode_tests.dart';
 
 String decode(List<int> bytes) => new Utf8Decoder().convert(bytes);
 
@@ skipping 11 matching lines @@
 void testDecodeSlice() {
   var decoder = UTF8.decoder;  // Doesn't allow malformed.
   var ascii = [0x41, 0x42, 0x43, 0x44, 0x45];
   Expect.equals("ABCDE", decoder.convert(ascii));
   Expect.equals("ABCDE", decoder.convert(ascii, 0));
   Expect.equals("ABCDE", decoder.convert(ascii, 0, ascii.length));
   Expect.equals("CDE", decoder.convert(ascii, 2));
   Expect.equals("BCD", decoder.convert(ascii, 1, 4));
   Expect.equals("ABCD", decoder.convert(ascii, 0, 4));
 
-  Expect.throws(() => decoder.convert(ascii, -1));    // start < 0.
-  Expect.throws(() => decoder.convert(ascii, 6));     // start > length
+  Expect.throws(() => decoder.convert(ascii, -1)); //    start < 0.
+  Expect.throws(() => decoder.convert(ascii, 6)); //     start > length
   Expect.throws(() => decoder.convert(ascii, 0, -1)); // end < 0
   Expect.throws(() => decoder.convert(ascii, 0, 6));  // end > length

[sra1, 2017/03/21 03:01:09]

fix

   Expect.throws(() => decoder.convert(ascii, 3, 2));  // end < start
 
   var utf8 = [0xc2, 0x81, 0xc2, 0x82, 0xe1, 0x81, 0x81];
   Expect.equals("\u0081\u0082\u1041", decoder.convert(utf8));
   Expect.equals("\u0082\u1041", decoder.convert(utf8, 2));
   Expect.equals("\u0081\u0082", decoder.convert(utf8, 0, 4));
   Expect.equals("\u0082", decoder.convert(utf8, 2, 4));
   Expect.throws(() => decoder.convert(utf8, 1));
   Expect.throws(() => decoder.convert(utf8, 0, 1));
   Expect.throws(() => decoder.convert(utf8, 2, 5));
@@ skipping 28 matching lines @@
   testExn([0xC0, 0x80], 0);
   testExn([0xC1, 0xBF], 0);
   testExn([0xE0, 0x80, 0x80], 0);
   testExn([0xE0, 0x9F, 0xBF], 0);
   testExn([0xF0, 0x80, 0x80, 0x80], 0);
   testExn([0xF0, 0x8F, 0xBF, 0xBF], 0);
   // Invalid character (value too large, over 0x10FFFF).
   testExn([0xF4, 0x90, 0x80, 0x80], 0);
   testExn([0xF7, 0xBF, 0xBF, 0xBF], 0);
 }