Correct the IP address displayed by server

Server shows wrong IP address it listens to before. It shows 0.0.0.0
while it is listening to localhost and vice versa. Also, we don't need
another var only for displaying, just getting the var what server really
got is enough.

lib/plugins/console/server.js

@@ -35,10 +35,7 @@ module.exports = function(args, callback){
         log.i('Using drafts.');
       }
 
-      // for display purpose only
-      var ip = serverIp === '0.0.0.0' ? 'localhost' : serverIp;
-
-      log.i('Hexo is running at ' + 'http://%s:%d%s'.underline + '. Press Ctrl+C to stop.', ip, port, root);
+      log.i('Hexo is running at ' + 'http://%s:%d%s'.underline + '. Press Ctrl+C to stop.', serverIp, port, root);
 
       /**
       * Fired after server started.