Form error messages still persist when insert (but not really insert data) then update.

[balll]

Form error messages still persist when insert (but not really insert data) then update.

To reproduce

1. Click the add button (Use afModal operation=insert)
2. Click create without input any data.
3. Close the modal without insert any data.
4. Click the update button (Use afModal operation=update on some existing items)

As you can see. The error messages still persist.

[mpowaga]

Fixed in this commit.