refactor res.links()

lib/response.js

@@ -55,9 +55,9 @@ res.status = function(code){
  */
 
 res.links = function(links){
-  var linkField = typeof this.get('Link') === 'undefined' ?
-    '' :  this.get('Link') + ', ';
-  return this.set('Link', linkField + Object.keys(links).map(function(rel){
+  var link = this.get('Link') || '';
+  if (link) link += ', ';
+  return this.set('Link', link + Object.keys(links).map(function(rel){
     return '<' + links[rel] + '>; rel="' + rel + '"';
   }).join(', '));
 };

test/res.links.js

@@ -26,11 +26,11 @@ describe('res', function(){
         next: 'http://api.example.com/users?page=2',
         last: 'http://api.example.com/users?page=5'
       });
+
       res.links({
         prev: 'http://api.example.com/users?page=1',
       });
 
-      console.log(res.get('link'));
       res.get('link')
       .should.equal(
           '<http://api.example.com/users?page=2>; rel="next", '