修复报错

app-hd/controllers/GoodsController.php

@@ -145,6 +145,7 @@ class GoodsController extends BaseController
             util::fail('分类不能为空');
         }
         $where = ['cId' => $cId];
+        $params = [];
         if(!empty($flowerNum)){
             $params['flowerNum'] = $flowerNum;
         }