Fix another comparison between None and 0.

diff --git a/Lib/subprocess.py b/Lib/subprocess.py
index 0d191298884f414167ee1784e325b5d994a77354..55e267fd7aed97a8ae242fa1f8eb041757afc648 100644 (file)
--- a/Lib/subprocess.py
+++ b/Lib/subprocess.py
@@ -420,7 +420,8 @@ _active = []
 
 def _cleanup():
     for inst in _active[:]:
-        if inst.poll(_deadstate=sys.maxint) >= 0:
+        res = inst.poll(_deadstate=sys.maxint)
+        if res is not None and res >= 0:
             try:
                 _active.remove(inst)
             except ValueError: