Issue #26168: Fixed possible refleaks in failing Py_BuildValue() with the "N"

format unit.

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

diff --cc Misc/NEWS
index 628426ba56b41d827397e059695ea2f2779a5412,ef1a65fdb82d8ea83ddff3ff8d1c8aee85559e38..86b65ad550827d77a74c75437e925dc5663812de
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -41,10 -10,13 +41,13 @@@ Release date: 2016-05-1
  Core and Builtins
  -----------------
  
+ - Issue #26168: Fixed possible refleaks in failing Py_BuildValue() with the "N"
+   format unit.
+ 
  - Issue #26991: Fix possible refleak when creating a function with annotations.
  
 -- Issue #27039: Fixed bytearray.remove() for values greater than 127.  Patch by
 -  Joe Jevnik.
 +- Issue #27039: Fixed bytearray.remove() for values greater than 127.  Based on
 +  patch by Joe Jevnik.
  
  - Issue #23640: int.from_bytes() no longer bypasses constructors for subclasses.
  

diff --cc Modules/_testcapimodule.c
Simple merge

diff --cc Python/modsupport.c
Simple merge