Issue #4569: Interpreter crash when mutating a memoryview with an item size larger than 1.

(together with a bit of reindenting)
diff --git a/Misc/NEWS b/Misc/NEWS
index 65458d0..cb2cf43 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -29,6 +29,9 @@
   kept open but the file object behaves like a closed file. The ``FileIO``
   object also got a new readonly attribute ``closefd``.
 
+- Issue #4569: Interpreter crash when mutating a memoryview with an item size
+  larger than 1.
+
 Library
 -------