SF patch #798534:  Windows os.popen needlessly gets a reference to tuple ()
(Contributed by Andrew Gaul.)

Fixes a minor leak.
diff --git a/Misc/ACKS b/Misc/ACKS
index 7d65eee..9191d6c 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -190,6 +190,7 @@
 Nitin Ganatra
 Fred Gansevles
 Lars Marius Garshol
+Andrew Gaul
 Stephen M. Gava
 Harry Henry Gebel
 Marius Gedminas