Fix lock timeout bug

lib/local-cache.js

@@ -79,7 +79,7 @@ function refresh(callback) {
       return callback();
     }
 
-    cache.lock("presets_hash_lock", 3000, function(err, unlockOrExtend) {
+    cache.lock("presets_hash_lock", 3, function(err, unlockOrExtend) {
       if (err)
         return callback(err);