Move into a separate pr [share#517]

Author: maxfortun

lib/backend.js

@@ -197,7 +197,7 @@ Backend.prototype.trigger = function(action, agent, request, callback) {
     if (err) return callback(err);
     var fn = fns.shift();
     if (!fn) return callback();
-    fn(request, callback);
+    fn(request, next);
   };
   next();
 };