[Python-checkins] bpo-30040: update news entry (GH-12324)

[Inada Naoki]

https://github.com/python/cpython/commit/3fe7fa316f74ed630fbbcdf54564f15cda7cb045
commit: 3fe7fa316f74ed630fbbcdf54564f15cda7cb045
branch: master
author: Inada Naoki <songofacandy at gmail.com>
committer: GitHub <noreply at github.com>
date: 2019-03-14T18:54:09+09:00
summary:

bpo-30040: update news entry (GH-12324)

This optimization is not only for space, but also for speed.

files:
M Misc/NEWS.d/next/Core and Builtins/2019-03-11-22-30-56.bpo-30040.W9z8X7.rst

diff --git a/Misc/NEWS.d/next/Core and Builtins/2019-03-11-22-30-56.bpo-30040.W9z8X7.rst b/Misc/NEWS.d/next/Core and Builtins/2019-03-11-22-30-56.bpo-30040.W9z8X7.rst
index eacba679d5a3..0975dba1f37e 100644
--- a/Misc/NEWS.d/next/Core and Builtins/2019-03-11-22-30-56.bpo-30040.W9z8X7.rst	
+++ b/Misc/NEWS.d/next/Core and Builtins/2019-03-11-22-30-56.bpo-30040.W9z8X7.rst	
@@ -1,2 +1,3 @@
 New empty dict uses fewer memory for now.  It used more memory than empty
-dict created by ``dict.clear()``.  Patch by Inada Naoki.
+dict created by ``dict.clear()``.  And empty dict creation and deletion
+is about 2x faster.  Patch by Inada Naoki.