Fix whitespace to conform to our linting tests

I completely missed those two.

Fixes: 24d283cfdb

eventlet/backdoor.py

@@ -90,7 +90,7 @@ def backdoor_server(sock, locals=None):
     """
     listening_on = sock.getsockname()
     if sock.family == socket.AF_INET:
-        #Expand result to IP + port
+        # Expand result to IP + port
         listening_on = '%s:%s' % listening_on
     elif sock.family == socket.AF_INET6:
         ip, port, _, _ = listening_on

tests/backdoor_test.py

@@ -38,7 +38,7 @@ class BackdoorTest(LimitedTestCase):
 
     def test_server_on_ipv6_socket(self):
         listener = socket.socket(socket.AF_INET6)
-        listener.bind(('::1',0))
+        listener.bind(('::1', 0))
         listener.listen(5)
         serv = eventlet.spawn(backdoor.backdoor_server, listener)
         client = socket.socket(socket.AF_INET6)