filter None results from game.last_locations()

app/models/game.py

@@ -37,7 +37,9 @@ class Game(db.Model):
         for player in players:
             if isinstance(player, GamePlayer):
                 player = player.user
-            locations.append(player.last_location(self))
+            location = player.last_location(self)
+            if location:
+                locations.append(location)
         return locations
 
     def bunnies(self):