Fix `luarocks list --outdated`

Compare latest available version with latest installed version,
not with lexicographically smallest installed version.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/luarocks/list.lua b/src/luarocks/list.lua
index 99868028..b517d182 100644
--- a/src/luarocks/list.lua
+++ b/src/luarocks/list.lua
@@ -32,7 +32,7 @@ local function check_outdated(trees, query)
       local latest_installed
       local latest_available, latest_available_repo
 
-      for version, _ in util.sortedpairs(versions) do
+      for version, _ in util.sortedpairs(versions, deps.compare_versions) do
          latest_installed = version
          break
       end