Issue #16220: wsgiref now always calls close() on an iterable response.

Patch by Brent Tubbs.

diff --cc Lib/test/test_wsgiref.py
Simple merge

diff --cc Misc/ACKS
index 1e16600fa80a16adbb724496de726e3931e64381,8bdbe8f3c2954371f8886dc2aaa2fe86fd77e6ca..808d1ba3fe8de1aaff72b8467adba2c518ba5473
--- 1/Misc/ACKS
--- 2/Misc/ACKS
+++ b/Misc/ACKS
@@@ -1172,12 -1064,10 +1172,13 @@@ Erik Tolleru
  Matias Torchinsky
  Sandro Tosi
  Richard Townsend
 +David Townshend
  Laurence Tratt
 +Alberto Trevino
 +Matthias Troffaes
  John Tromp
  Jason Trowbridge
+ Brent Tubbs
  Anthony Tuininga
  Erno Tukia
  David Turner

diff --cc Misc/NEWS
Simple merge