magic-removal: Fixed errors in many_to_one_null model unit tests

git-svn-id: http://code.djangoproject.com/svn/django/branches/magic-removal@2259 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/modeltests/many_to_one_null/models.py

@@ -58,12 +58,16 @@ Second
 >>> a3.save()
 >>> a3.id
 3
->>> a3.reporter.id
->>> print a3.reporter.id
-None
+>>> a3.reporter
+Traceback (most recent call last):
+    ...
+DoesNotExist
+
 >>> a3 = Article.objects.get(pk=3)
 >>> print a3.reporter.id
-None
+Traceback (most recent call last):
+    ...
+DoesNotExist
 
 # Accessing an article's 'reporter' attribute throws ReporterDoesNotExist
 # if the reporter is set to None.