DRTVWR-418: Fix minor error in forwarding shutdown_request() call.

indra/llcorehttp/tests/test_llcorehttp_peer.py

@@ -291,7 +291,7 @@ def handle_error(self, request, client_address):
     def shutdown_request(self, *args, **kwds):
         try:
             # just forward to base-class method, but wrap in try/except
-            HTTPServer.shutdown_request(*args, **kwds)
+            HTTPServer.shutdown_request(self, *args, **kwds)
         except Exception as err:
             print >>sys.stderr, "Once more ignoring: %s" % err