Index: test_linecache.py
===================================================================
--- test_linecache.py	(revision 80169)
+++ test_linecache.py	(working copy)
@@ -114,6 +114,7 @@
                 for index, line in enumerate(source):
                     self.assertEquals(line, getline(source_name, index + 1))
                     source_list.append(line)
+                source.close ()
 
         finally:
             support.unlink(source_name)