Negligible style fix.

Author: aaugustin

django/db/models/fields/__init__.py

@@ -114,8 +114,8 @@ def __init__(self, verbose_name=None, name=None, primary_key=False,
  self.default = default
  self.editable = editable
  self.serialize = serialize
- self.unique_for_date, self.unique_for_month = (unique_for_date,
-  unique_for_month)
+ self.unique_for_date = unique_for_date
+ self.unique_for_month = unique_for_month
  self.unique_for_year = unique_for_year
  self._choices = choices or []
  self.help_text = help_text