Fix use of HashException in dart:io

sdk/lib/io/crypto.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.
 
 part of dart.io;
 
 class _CryptoUtils {
   static String bytesToHex(List<int> bytes) {
     var result = new StringBuffer();
     for (var part in bytes) {
@@ skipping 162 matching lines @@
             int this._digestSizeInWords,
             bool this._bigEndianWords)
       : _pendingData = [] {
     _currentChunk = new List(_chunkSizeInWords);
     _h = new List(_digestSizeInWords);
   }
 
   // Update the hasher with more data.
   add(List<int> data) {
     if (_digestCalled) {
-      throw new ArgumentError(
+      throw new StateError(
           'Hash update method called after digest was retrieved');
     }
     _lengthInBytes += data.length;
     _pendingData.addAll(data);
     _iterate();
   }
 
   // Finish the hash computation and return the digest string.
   List<int> close() {
     if (_digestCalled) {
@@ skipping 245 matching lines @@
 
     _h[0] = _add32(a, _h[0]);
     _h[1] = _add32(b, _h[1]);
     _h[2] = _add32(c, _h[2]);
     _h[3] = _add32(d, _h[3]);
     _h[4] = _add32(e, _h[4]);
   }
 
   List<int> _w;
 }