no global replaceVars func

lib/cartodb/template_maps.js

@@ -424,14 +424,14 @@ var _reNumber = /^([-+]?[\d\.]?\d+([eE][+-]?\d+)?)$/,
     _reCSSColorName = /^[a-zA-Z]+$/,
     _reCSSColorVal = /^#[0-9a-fA-F]{3,6}$/;
 
-_replaceVars = function(str, params) {
+function _replaceVars (str, params) {
   //return _.template(str, params); // lazy way, possibly dangerous 
   // Construct regular expressions for each param
     Object.keys(params).forEach(function(k) {
         str = str.replace(new RegExp("<%=\\s*" + k + "\\s*%>", "g"), params[k]);
     });
     return str;
-};
+}
 o.instance = function(template, params) {
   var all_params = {};
   var phold = template.placeholders || {};