Issue #21619: Popen objects no longer leave a zombie after exit in the with

statement if the pipe was broken.  Patch by Martin Panter.

diff --cc Lib/subprocess.py
Simple merge

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

diff --cc Misc/NEWS
index fc84b5e9b0d7a307ce416c438b97a37e3649169c,05fde7046d7a924b190f92a2f68be104c58ec9fa..6bb4580bae631530d779883242808d0efcd86d1e
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -13,9 -13,9 +13,12 @@@ Core and Builtin
  Library
  -------
  
+ - Issue #21619: Popen objects no longer leave a zombie after exit in the with
+   statement if the pipe was broken.  Patch by Martin Panter.
+ 
 +- Issue #15955: Add an option to limit the output size in bz2.decompress().
 +  Patch by Nikolaus Rath.
 +
  - Issue #6639: Module-level turtle functions no longer raise TclError after
    closing the window.