修复bug

app/service/material_list.js

@@ -1012,7 +1012,7 @@ module.exports = app => {
                         };
                         updateBillsData.push(oneBillsData);
                     }
-                    await transaction.updateRows(this.ctx.service.materialBills.tableName, updateBillsData);
+                    if (updateBillsData.length > 0) await transaction.updateRows(this.ctx.service.materialBills.tableName, updateBillsData);
                     // 计算得出本期总金额
                     let m_tp = 0;
                     let m_tax_tp = 0;