搜索品牌，无店铺时判断变量是否存在

@@ -180,6 +180,7 @@ class HelperSearch
         if (isset($data['shopData']) && !empty($data['shopData'])) {
             $result['shopEntry'] = array();
             foreach ($data['shopData'] as $val) {
+                $val['shop']['shop_id'] = empty($val['shop']['shop_id']) ? '' : $val['shop']['shop_id'];
                 $shopSort = self::shop($val['shop'], $val['shopSort']);
                 if (empty($shopSort)) {
                     continue;