No need to inform that XEP-0237 is optional; clarified in XEP version 1.2

diff --git a/src/mod_roster.erl b/src/mod_roster.erl
index 6ffbca2fe1310856172f26f136304d6724ece881..f611136daf6f616b04ffb37e1a083d5b67802df2 100644 (file)
--- a/src/mod_roster.erl
+++ b/src/mod_roster.erl
@@ -161,7 +161,7 @@ get_versioning_feature(Acc, Host) ->
            Feature = {xmlelement,
                       "ver",
                       [{"xmlns", ?NS_ROSTER_VER}],
-                      [{xmlelement, "optional", [], []}]},
+                      []},
            [Feature | Acc];
        false -> []
     end.