修复封面图未修改时清零问题

vendor/antgoods/goods/src/controllers/GoodsController.php

@@ -123,7 +123,7 @@ class GoodsController extends Controller
             $goods_manager = new GoodsManager();
             $save_cover_image_res = $goods_manager->saveFile(explode(',', $cover_image_id_str), $model, explode(',', $cover_image_old_id_arr));
             $save_detail_image_res = $goods_manager->saveFile(explode(',', $detail_image_id_str), $model, explode(',', $detail_image_old_id_arr), File::OWN_TYPE_GOODS_DETAILS);
-            if($save_cover_image_res['status'] && $save_detail_image_res['status']){
+            if($save_cover_image_res['status'] && $save_detail_image_res['status'] && $save_cover_image_res['first_file_id'] != 0){
                 $model->image = $save_cover_image_res['first_file_id'];
                 $model->save();
             }