reverts changes for loading mapnik-reference when is actually needed

1 changed files with 1 additions and 1 deletions
--- a/lib/carto/tree/reference.js
+++ b/lib/carto/tree/reference.js
@ -5,6 +5,7 @@
 (function(tree) {

 var _ = require('underscore'),
+    mapnik_reference = require('mapnik-reference'),
    ref = {};

 ref.setData = function(data) {
@ -23,7 +24,6 @@ ref.setData = function(data) {
 };

 ref.setVersion = function(version) {
-    var mapnik_reference = require('mapnik-reference');
    if (mapnik_reference.version.hasOwnProperty(version)) {
        ref.setData(mapnik_reference.version[version]);
        return true;