From b610ff9f65d1289904f34a49a242fe843db094cc Mon Sep 17 00:00:00 2001
From: Simon MacMullen <simon@rabbitmq.com>
Date: Tue, 8 Mar 2011 14:19:40 +0000
Subject: Use lists:append/1.

---
 src/rabbit_upgrade.erl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/rabbit_upgrade.erl b/src/rabbit_upgrade.erl
index 8113bad8..1284d229 100644
--- a/src/rabbit_upgrade.erl
+++ b/src/rabbit_upgrade.erl
@@ -270,7 +270,7 @@ desired_version(Scope) ->
     with_upgrade_graph(fun (G) -> heads(G) end, Scope).
 
 flatten(LoL) ->
-    lists:sort(lists:flatten(LoL)).
+    lists:sort(lists:append(LoL)).
 
 filter_by_scope(Scope, Versions) ->
     with_upgrade_graph(
-- 
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