fixup! Preserve attribute order when parsing

We don't need to create actual sets here

Author: gsnedders

html5lib/html5parser.py

@@ -1,5 +1,5 @@
 from __future__ import absolute_import, division, unicode_literals
-from six import with_metaclass
+from six import with_metaclass, viewkeys
 
 import types
 from collections import OrderedDict
@@ -2716,7 +2716,7 @@ def processEndTag(self, token):
 
 
 def adjust_attributes(token, replacements):
-    if frozenset(token['data']) & frozenset(replacements):
+    if viewkeys(token['data']) & viewkeys(replacements):
         token['data'] = OrderedDict(
             (replacements.get(k, k), v) for k, v in token['data'].iteritems())