oups! fix a missing callback that's been here for a while...

lib/commands/metadata.js

@@ -42,8 +42,8 @@ Data.setMetadata = function (Env, safeKey, data, cb, Server) {
     var channel = data.channel;
     var command = data.command;
     if (!channel || !Core.isValidId(channel)) { return void cb ('INVALID_CHAN'); }
-    if (!command || typeof (command) !== 'string') { return void cb ('INVALID_COMMAND'); }
-    if (Meta.commands.indexOf(command) === -1) { return void('UNSUPPORTED_COMMAND'); }
+    if (!command || typeof (command) !== 'string') { return void cb('INVALID_COMMAND'); }
+    if (Meta.commands.indexOf(command) === -1) { return void cb('UNSUPPORTED_COMMAND'); }
 
     queueMetadata(channel, function (next) {
         Data.getMetadata(Env, channel, function (err, metadata) {