Minor cleanup to the select_for_update tests (as suggested by Alex Gaynor).
Minor cleanup to the select_for_update tests (as suggested by Alex Gaynor).

git-svn-id: 554f83ef17aa7291f84efa897c1acfc5d0035373@16060 bcc190cf-cafb-0310-a4f2-bffc1f526a37

svn2github/django,svn2github/django,svn2github/django