mod_invites: Handle 'auto' value as an atom in the 'landing_page' option

Author: badlop

src/mod_invites.erl

@@ -291,7 +291,7 @@ mod_opt_type(access_create_account) ->
 mod_opt_type(db_type) ->
     econf:db_type(?MODULE);
 mod_opt_type(landing_page) ->
-    econf:either(none, econf:binary());
+    econf:either(econf:enum([none, auto]), econf:binary());
 mod_opt_type(max_invites) ->
     econf:pos_int(infinity);
 mod_opt_type(site_name) ->

src/mod_invites_http.erl

@@ -65,7 +65,7 @@ landing_page(Host, Invite) ->
     case mod_invites_opt:landing_page(Host) of
         none ->
             <<>>;
-        <<"auto">> ->
+        auto ->
             try ejabberd_http:get_auto_url(any, mod_invites) of
                 AutoURL0 ->
                     AutoURL = misc:expand_keyword(<<"@HOST@">>, AutoURL0, Host),