完善功能

app/admin/service/goods/GoodsService.php

@@ -1402,7 +1402,7 @@ class GoodsService
                     $goodsSku->save();
                 }
             }
-            if ($type == 'insert' || empty($goodsSku)){
+            if ($type == 'insert' || !$goodsSku){
                 Goods::where('goods_id', $params['goods_id'])->update(['goods_sku_json' => '{"规格": ["标准"]}']);
                 $skuData = [
                     'join_sku_goods_id' => $params['goods_id'],