修复固定审批流修改bug

app/service/shenpi_audit.js

@@ -468,7 +468,7 @@ module.exports = app => {
                     audit_id: a.aid || a.uid || a.audit_id,
                     audit_order: a.audit_order,
                     audit_type: a.audit_type,
-                    audit_ledger_id: a.audit_ledger_id,
+                    audit_ledger_id: a.audit_ledger_id || '',
                     sp_group,
                 });
             }