(closes issue #10577)

Reported by: jamesgolovich
Patches:
      asterisk-dundifree.diff.txt uploaded by jamesgolovich (license 176)
Don't leak memory when unloading DUNDi.


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@82243 65c4cc65-6c06-0410-ace0-fbb531ad65f3

pbx/pbx_dundi.c

@@ -4491,6 +4491,11 @@ static int unload_module(void)
 	io_context_destroy(io);
 	sched_context_destroy(sched);
 
+	mark_mappings();
+	prune_mappings();
+	mark_peers();
+	prune_peers();
+
 	return 0;
 }