inc: fix call to undefined function is_dhcpv6_server_enabled()

While there, move the IPv4 sibling and add a require for the remaining
outside caller.

src/etc/inc/pfsense-utils.inc

@@ -575,43 +575,6 @@ function reload_ttys()
 	exec('/bin/kill -HUP 1');
 }
 
-/* DHCP enabled on any interfaces? */
-function is_dhcp_server_enabled() {
-	global $config;
-
-	if (!is_array($config['dhcpd']))
-		return false;
-
-	foreach ($config['dhcpd'] as $dhcpif => $dhcpifconf) {
-		if (isset($dhcpifconf['enable']) && !empty($config['interfaces'][$dhcpif]))
-			return true;
-	}
-
-	return false;
-}
-
-/* DHCP enabled on any interfaces? */
-function is_dhcpv6_server_enabled() {
-	global $config;
-
-	if (is_array($config['interfaces'])) {
-		foreach ($config['interfaces'] as $ifcfg) {
-			if (isset($ifcfg['enable']) && !empty($ifcfg['track6-interface']))
-				return true;
-		}
-	}
-
-	if (!is_array($config['dhcpdv6']))
-		return false;
-
-	foreach ($config['dhcpdv6'] as $dhcpv6if => $dhcpv6ifconf) {
-		if (isset($dhcpv6ifconf['enable']) && !empty($config['interfaces'][$dhcpv6if]))
-			return true;
-	}
-
-	return false;
-}
-
 /* radvd enabled on any interfaces? */
 function is_radvd_enabled() {
 	global $config;

src/etc/inc/service-utils.inc

@@ -29,6 +29,7 @@
 require_once("globals.inc");
 require_once("captiveportal.inc");
 require_once("openvpn.inc");
+require_once("services.inc");
 require_once("ipsec.inc");
 require_once("vpn.inc");
 require_once("vslb.inc");

src/etc/inc/services.inc

@@ -362,6 +362,23 @@ function services_dhcpd_configure($family = "all", $blacklist = array())
 	}
 }
 
+function is_dhcp_server_enabled()
+{
+	global $config;
+
+	if (!is_array($config['dhcpd'])) {
+		return false;
+	}
+
+	foreach ($config['dhcpd'] as $dhcpif => $dhcpifconf) {
+		if (isset($dhcpifconf['enable']) && !empty($config['interfaces'][$dhcpif])) {
+			return true;
+		}
+	}
+
+	return false;
+}
+
 function services_dhcpdv4_configure()
 {
 	global $config, $g;
@@ -975,6 +992,31 @@ function dhcpdzones($ddns_zones, $dhcpifconf)
 	return $dhcpdconf;
 }
 
+function is_dhcpv6_server_enabled()
+{
+	global $config;
+
+	if (is_array($config['interfaces'])) {
+		foreach ($config['interfaces'] as $ifcfg) {
+			if (isset($ifcfg['enable']) && !empty($ifcfg['track6-interface'])) {
+				return true;
+			}
+		}
+	}
+
+	if (!isset($config['dhcpdv6']) || !is_array($config['dhcpdv6'])) {
+		return false;
+	}
+
+	foreach ($config['dhcpdv6'] as $dhcpv6if => $dhcpv6ifconf) {
+		if (isset($dhcpv6ifconf['enable']) && !empty($config['interfaces'][$dhcpv6if])) {
+			return true;
+		}
+	}
+
+	return false;
+}
+
 function services_dhcpdv6_configure($blacklist = array())
 {
 	global $config, $g;