Don't call to xmpp_idna

rebar.config

@@ -25,7 +25,7 @@
         {stringprep, ".*", {git, "https://github.com/processone/stringprep", {tag, "1.0.17"}}},
         {fast_xml, ".*", {git, "https://github.com/processone/fast_xml", {tag, "1.1.37"}}},
 	{idna, ".*", {git, "https://github.com/benoitc/erlang-idna", {tag, "6.0.0"}}},
-        {xmpp, ".*", {git, "https://github.com/processone/xmpp", "3e892bc"}},
+        {xmpp, ".*", {git, "https://github.com/processone/xmpp", "f3517a9"}},
         {fast_yaml, ".*", {git, "https://github.com/processone/fast_yaml", {tag, "1.0.20"}}},
 	{yconf, ".*", {git, "https://github.com/processone/yconf", {tag, "1.0.0"}}},
         {jiffy, ".*", {git, "https://github.com/davisp/jiffy", {tag, "0.14.8"}}},

src/ejabberd_pkix.erl

@@ -92,14 +92,14 @@ get_certfile(Domain) ->
 
 -spec get_certfile_no_default(binary()) -> {ok, filename()} | error.
 get_certfile_no_default(Domain) ->
-    case xmpp_idna:domain_utf8_to_ascii(Domain) of
-	false ->
-	    error;
+    try list_to_binary(idna:utf8_to_ascii(Domain)) of
 	ASCIIDomain ->
 	    case pkix:get_certfile(ASCIIDomain) of
 		error -> error;
 		Ret -> {ok, select_certfile(Ret)}
 	    end
+    catch _:_ ->
+	    error
     end.
 
 -spec get_certfile() -> {ok, filename()} | error.