Fix test__makefile_ref under Windows 10 with new psutil 4.4 which actually...

Fix test__makefile_ref under Windows 10 with new psutil 4.4 which actually started returning open files, not just connections.

src/greentest/greentest.py

@@ -712,6 +712,11 @@ else:
     # as -1 there, so we can't fully check those.
 
     def get_open_files():
+        """
+        Return a list of popenfile and pconn objects.
+
+        Note that other than `fd`, they have different attributes.
+        """
         results = dict()
         process = psutil.Process()
         results['data'] = process.open_files() + process.connections('all')

src/greentest/test__makefile_ref.py

+from __future__ import print_function
 import os
 from gevent import monkey; monkey.patch_all()
 import re
@@ -64,7 +65,7 @@ class Test(unittest.TestCase):
         open_files = get_open_files()
         sockname = sock.getsockname()
         for x in open_files['data']:
-            if x.laddr == sockname:
+            if getattr(x, 'laddr', None) == sockname:
                 assert x.status in (psutil.CONN_LISTEN, psutil.CONN_ESTABLISHED) + self.extra_allowed_open_states, x.status
                 return
         raise AssertionError("%r is not open:\n%s" % (sock, open_files['data']))