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

Fixes a minor leak.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator