conflict with post locked message

Hi,
The message, when the post is locked from another user, is wrong. The confict is beetween :
– ligne 24 in /accordion-shortcode-and-widget/lib/installation.php: add_action(‘admin_footer’, ‘wpsm_ac_sh_editor_popup_content’);
– and ligne 196 in /wp-admin/post.php : add_action( ‘admin_footer’, ‘_admin_notice_post_locked’ );

I resolved to myself adding priorité in:
ligne 24 in /accordion-shortcode-and-widget/lib/installation.php: add_action(‘admin_footer’, ‘wpsm_ac_sh_editor_popup_content’,100);

Thanks