Assigning None to pointer type structure fields possible overwrote
wrong fields.
diff --git a/Misc/NEWS b/Misc/NEWS
index 157c165..a0266c4 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -39,6 +39,9 @@
 Library
 -------
 
+- Assigning None to pointer type fields in ctypes structures possible
+  overwrote the wrong fields, this is fixed now.
+
 - Fixed a segfault in _ctypes when ctypes.wintypes were imported
   on non-Windows platforms.