fix...

fix https://github.com/opnsense/core/commit/b79592582e0d1fb86343867468f09fee8ca3c8af#commitcomment-10707586

src/etc/inc/filter.inc

@@ -962,7 +962,7 @@ function filter_generate_optcfg_array()
 		$FilterIflist['openvpn'] = $oic;
 	}
 	/* add interface groups */
-	if(isset($config['ifgroups']['ifgroupentry']) && is_array($config['ifgroups']['ifgroupentry'])) {
+	if(isset($config['ifgroups']['ifgroupentry'])) {
 		foreach($config['ifgroups']['ifgroupentry'] as $ifgen) {
 			$oc = array();
 			$oc['if'] = $ifgen['ifname'];

src/etc/inc/interfaces.inc

@@ -4580,7 +4580,7 @@ function link_interface_to_vlans($int, $action = "") {
 function link_interface_to_vips($int, $action = "") {
 	global $config;
 
-	if (isset($config['virtualip']['vip']) && is_array($config['virtualip']['vip'])) {
+	if (isset($config['virtualip']['vip'])) {
 		$result = array();
 		foreach ($config['virtualip']['vip'] as $vip) {
 			if ($int == $vip['interface']) {