Fix bug #1413192, fix seg fault in bsddb if a txn was deleted before the env.

Will backport.
diff --git a/Misc/NEWS b/Misc/NEWS
index b8d11b5..278db44 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -216,6 +216,9 @@
 Extension Modules
 -----------------
 
+- Bug #1413192, fix seg fault in bsddb if a transaction was deleted
+  before the env.
+
 - Patch #1103116: Basic AF_NETLINK support.
 
 - Bug #1402308, (possible) segfault when using mmap.mmap(-1, ...)