Fixes call to undeclared function when setting port forward target as an alias

Author: jaredhendrickson13

pfSense-pkg-API/files/etc/inc/api/models/APIFirewallNATPortForwardCreate.inc

@@ -79,10 +79,8 @@ class APIFirewallNATPortForwardCreate extends APIModel {
     private function __validate_target() {
         # Require client to pass in an internal target for the port forward
         if (isset($this->initial_data['target'])) {
-            # Require the target to either be a valid IPv4 or IPv6 address
-            if (is_ipaddrv4($this->initial_data['target'])) {
-                $this->validated_data["target"] = $this->initial_data['target'];
-            } elseif (alias_in_use($this->initial_data['target'])) {
+            # Require the target to either be a valid IPv4 or alias
+            if (in_array(is_ipaddroralias($this->initial_data['target']), [4, true])) {
                 $this->validated_data["target"] = $this->initial_data['target'];
             } else {
                 $this->errors[] = APIResponse\get(4009);

pfSense-pkg-API/files/etc/inc/api/models/APIFirewallNATPortForwardUpdate.inc

@@ -101,10 +101,8 @@ class APIFirewallNATPortForwardUpdate extends APIModel {
     private function __validate_target() {
         # Optionally allow client to update internal target for the port forward
         if (isset($this->initial_data['target'])) {
-            # Require the target to either be a valid IPv4 or IPv6 address
-            if (is_ipaddrv4($this->initial_data['target'])) {
-                $this->validated_data["target"] = $this->initial_data['target'];
-            } elseif (alias_in_use($this->initial_data['target'])) {
+            # Require the target to either be a valid IPv4 or alias
+            if (in_array(is_ipaddroralias($this->initial_data['target']), [4, true])) {
                 $this->validated_data["target"] = $this->initial_data['target'];
             } else {
                 $this->errors[] = APIResponse\get(4009);