Roll to pickup pool changes

packages/crypto/lib/src/md5.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 'dart:convert';
 import 'dart:typed_data';
 
 import 'digest.dart';
 import 'hash.dart';
 import 'hash_sink.dart';
@@ skipping 71 matching lines @@
 
   @override
   void updateHash(Uint32List chunk) {
     assert(chunk.length == 16);
 
     var a = digest[0];
     var b = digest[1];
     var c = digest[2];
     var d = digest[3];
 
-    var e;
-    var f;
+    int e;
+    int f;
 
     for (var i = 0; i < 64; i++) {
       if (i < 16) {
         e = (b & c) | ((~b & mask32) & d);
         f = i;
       } else if (i < 32) {
         e = (d & b) | ((~d & mask32) & c);
         f = ((5 * i) + 1) % 16;
       } else if (i < 48) {
         e = b ^ c ^ d;
@@ skipping 12 matching lines @@
               _shiftAmounts[i]));
       a = temp;
     }
 
     digest[0] = add32(a, digest[0]);
     digest[1] = add32(b, digest[1]);
     digest[2] = add32(c, digest[2]);
     digest[3] = add32(d, digest[3]);
   }
 }