明细类别保存后保存的BUG修改

frontend/saas-web/app/view/document/kind/ChildForm.js

@@ -212,7 +212,7 @@ Ext.define('saas.view.document.kind.ChildForm', {
                 if(grid){
                     if(form.ownerCt._parent.lookup('document-kind-Grid')!=null){
                         form.ownerCt._parent.lookup('document-kind-Grid').store.load()
-                    }else{
+                    }else if(grid.store){
                         grid.store.load();
                     }
                 }