fix crash

tournaments/models/team_score.py

@@ -27,12 +27,15 @@ class TeamScore(models.Model):
         return names
 
     def scores(self):
-        return [int(x) for x in self.score.split(',')]
+        if self.score:
+            return [int(x) for x in self.score.split(',')]
+        else:
+            return []
 
     def scores_array(self):
-            scores = []
-            if self.score:
-                scores = [x for x in self.score.split(',')]
-            if self.walk_out == 1:
-                scores.insert(0, 'WO')
-            return scores
+        scores = []
+        if self.score:
+            scores = [x for x in self.score.split(',')]
+        if self.walk_out == 1:
+            scores.insert(0, 'WO')
+        return scores