fix rcon return

mapvote.js

@@ -1161,7 +1161,7 @@ layer
             }
         }
 
-        for (const lay in Layers._layers.values()){
+        for (const lay of Layers.layers){
             this.verbose(1, 'mapvote found layer: ', lay.layerid);
         }
         this.verbose(1, 'Layer list updated', Layers.layers.length, 'total layers');