(Merge 3.2) Issue #12133: fix a ResourceWarning in urllib.request

AbstractHTTPHandler.do_open() of urllib.request closes the HTTP connection if
its getresponse() method fails with a socket error. Patch written by Ezio
Melotti.
diff --git a/Misc/NEWS b/Misc/NEWS
index 38850c7..630b890 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -193,6 +193,10 @@
 Library
 -------
 
+- Issue #12133: AbstractHTTPHandler.do_open() of urllib.request closes the HTTP
+  connection if its getresponse() method fails with a socket error. Patch
+  written by Ezio Melotti.
+
 - Issue #12240: Allow multiple setup hooks in packaging's setup.cfg files.
   Original patch by Erik Bray.