Add cgi.closelog() function to close the log file
diff --git a/Lib/test/test_cgi.py b/Lib/test/test_cgi.py
index c42db4e..dba7727 100644
--- a/Lib/test/test_cgi.py
+++ b/Lib/test/test_cgi.py
@@ -155,13 +155,7 @@
             cgi.logfp = None
             cgi.logfile = "/dev/null"
             cgi.initlog("%s", "Testing log 3")
-            def log_cleanup():
-                """Restore the global state of the log vars."""
-                cgi.logfile = ''
-                cgi.logfp.close()
-                cgi.logfp = None
-                cgi.log = cgi.initlog
-            self.addCleanup(log_cleanup)
+            self.addCleanup(cgi.closelog)
             cgi.log("Testing log 4")
 
     def test_fieldstorage_readline(self):