Mention the code clean-up thanks to Clang's static analyzer in Modules.

Was not applied to modules that will not compile under OS X, dbmmodule.c,
getaddrinfo.c, and getnameinfo.c.
diff --git a/Misc/NEWS b/Misc/NEWS
index 12e13e9..8d180ff 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -141,6 +141,8 @@
 Extension Modules
 -----------------
 
+- Use Clang 2.7's static analyzer to find places to clean up some code.
+
 - Build the ossaudio extension on GNU/kFreeBSD.
 
 Tests