Fix indenting, because apparently it had been sufficient time since I…

… last pushed a pep8 mistake

versioning/versioning.py

@@ -161,14 +161,14 @@ def item_changes(self):
             # Build some dicts of what we have
             item_dict = {}  # build a list of items, key is the item_pk
             for version in old_item_versions:  # put all the old versions in a list
-                    if version._model is None:
-                        continue
-                    compare = ModelComparison(old=version._object_version.object, **comparisonParams)
-                    item_dict[version.object_id] = compare
+                if version._model is None:
+                    continue
+                compare = ModelComparison(old=version._object_version.object, **comparisonParams)
+                item_dict[version.object_id] = compare
 
             for version in new_item_versions:  # go through the new versions
                 if version._model is None:
-                        continue
+                    continue
                 try:
                     compare = item_dict[version.object_id]  # see if there's a matching old version
                     compare.new = version._object_version.object  # then add the new version to the dictionary