Skip also the test on ENXIO

Author: vstinner

Lib/test/test_os/test_os.py

@@ -3203,7 +3203,7 @@ def test_getlogin(self):
         try:
             user_name = os.getlogin()
         except OSError as exc:
-            if exc.errno == errno.ENOTTY:
+            if exc.errno in (errno.ENOTTY, errno.ENXIO):
                 self.skipTest(str(exc))
             else:
                 raise