Fix a doc oversight, and revert 5876a8fd.

docs/testing.rst

@@ -68,7 +68,7 @@ to create a temporary database and initialize it.  The
 :func:`~tempfile.mkstemp` function does two things for us: it returns a
 low-level file handle and a random file name, the latter we use as
 database name.  We just have to keep the `db_fd` around so that we can use
-the :func:`os.close` function to close the function.
+the :func:`os.close` function to close the file.
 
 If we now run that testsuite, we should see the following output::
 

flask.py

@@ -270,6 +270,7 @@ def _get_package_path(name):
 # figure out if simplejson escapes slashes.  This behaviour was changed
 # from one version to another without reason.
 if not json_available or '\\/' not in json.dumps('/'):
+
     def _tojson_filter(*args, **kwargs):
         if __debug__:
             _assert_have_json()