diff --git a/django/contrib/contenttypes/generic.py b/django/contrib/contenttypes/generic.py
index 8f3db698e7..66fa9e6013 100644
--- a/django/contrib/contenttypes/generic.py
+++ b/django/contrib/contenttypes/generic.py
@@ -205,6 +205,7 @@ class ReverseGenericRelatedObjectsDescriptor(object):
             content_type_field_name = self.field.content_type_field_name,
             object_id_field_name = self.field.object_id_field_name
         )
+
         return manager
 
     def __set__(self, instance, value):
diff --git a/django/contrib/localflavor/us/models.py b/django/contrib/localflavor/us/models.py
index 6ce6d3bec7..4cb6e6851e 100644
--- a/django/contrib/localflavor/us/models.py
+++ b/django/contrib/localflavor/us/models.py
@@ -30,3 +30,4 @@ class PhoneNumberField(Field):
         defaults = {'form_class': USPhoneNumberField}
         defaults.update(kwargs)
         return super(PhoneNumberField, self).formfield(**defaults)
+
diff --git a/django/contrib/sessions/backends/db.py b/django/contrib/sessions/backends/db.py
index 4ece18ca37..8a53125095 100644
--- a/django/contrib/sessions/backends/db.py
+++ b/django/contrib/sessions/backends/db.py
@@ -58,7 +58,6 @@ class SessionStore(SessionBase):
             session_data = self.encode(self._get_session(no_load=must_create)),
             expire_date = self.get_expiry_date()
         )
-        # TODO update for multidb
         sid = transaction.savepoint(using=self.using)
         try:
             obj.save(force_insert=must_create)