(legacy) fix crash report "PHP Warning:  explode() expects parameter 2 to be string, array given in /usr/local/www/interfaces_bridge_edit.php on line 290"
(legacy) fix crash report "PHP Warning:  explode() expects parameter 2 to be string, array given in /usr/local/www/interfaces_bridge_edit.php on line 290"

opnsense/core,opnsense/core,opnsense/core,opnsense/core,opnsense/core,opnsense/core