An oversight in previous merge, r79610: test_doctest is sensible to the line numbering.

Lib/test/test_doctest.py

@@ -5,6 +5,7 @@ Test script for doctest.
 from test import support
 import doctest
 
+
 # NOTE: There are some additional tests relating to interaction with
 #       zipimport in the test_zipimport_support test module.