change order: null is a normal username.

routes/api.js

@@ -161,14 +161,14 @@ router.post('/score', function (req, res) {
     let end = req.body.end
     let arena = req.body.arena || 'entertain'
 
-    if (!usernameA || !usernameB) {
-        return res.status(404).send('username can not be null')
-    }
-	
     if (userscoreA == -5 && userscoreB == -5) {
 	return res.status(200).send('ghost match wont calculate the score.');    
     }
 	
+    if (!usernameA || !usernameB) {
+        return res.status(404).send('username can not be null')
+    }
+
     pool.connect(function (err, client, done) {
         if (err) {
             console.error('error fetching client from pool', err);