修复报错

tower_sanguo/assets/scripts/module/gm/GmUI.ts

@@ -133,7 +133,7 @@ export default class GmUI extends BaseUI {
         }
         this.lbl_crood.string = str;
     }
-    private createMonster(id, x, y) {
+    private createMonster(id = null, x = null, y = null) {
         let node = GameController.pool.getPrefabByClassName("Monster");
         if (!node) {
             return;