Remove useless ext parameter from lookup

Author: aredridel

lib/view.js

@@ -59,11 +59,13 @@ function View(name, options) {
  * @api private
  */
 
-View.prototype.lookup = function lookup(name, ext, options, cb) {
+View.prototype.lookup = function lookup(name, options, cb) {
   var roots = [].concat(this.root);
 
   debug('lookup "%s"', name);
 
+  var ext = path.extname(name);
+
   function lookup(roots, callback) {
     var root = roots.shift();
     if (!root) {
@@ -117,7 +119,7 @@ View.prototype.lookupMain = function lookupMain(cb) {
   var name = path.extname(this.name) == this.ext
     ? this.name
     : this.name + this.ext;
-  this.lookup(name, this.ext, this.options, function (err, path) {
+  this.lookup(name, this.options, function (err, path) {
     if (err) {
       return cb(err);
     } else if (!path) {