修复bug

app/controller/payment_controller.js

@@ -751,7 +751,7 @@ module.exports = app => {
                             const report_items_json = JSON.parse(trInfo.report_items_json);
                             const items = ['cells', 'signature_audit_cells', 'signature_cells', 'signature_date_cells', 'interact_cells'];
                             for (const item of items) {
-                                if (!difference && report_items_json[item] &&
+                                if (report_items_json[item] &&
                                     !ctx.helper._.isEmpty(ctx.helper._.differenceWith(JSON.parse(JSON.stringify(renderData.rptMsg[item])), report_items_json[item], ctx.helper._.isEqual))) {
                                     // 因为interact_cells里存在undefind值，必须先用JSON.parse和JSON.stringify转义才能对比
                                     difference = true;