git: 39c0036d881b - main - netlink: fix !INET6 warning

The branch main has been updated by melifaro:

URL: https://cgit.FreeBSD.org/src/commit/?id=39c0036d881b47c5bca792098fa2d221c068e274

commit 39c0036d881b47c5bca792098fa2d221c068e274
Author:     Alexander V. Chernikov <melifaro@FreeBSD.org>
AuthorDate: 2023-04-08 19:39:37 +0000
Commit:     Alexander V. Chernikov <melifaro@FreeBSD.org>
CommitDate: 2023-04-08 19:39:37 +0000

    netlink: fix !INET6 warning
    
    Reported by:    Gary Jennejohn <garyj@gmx.de>
    MFC after:      2 weeks
---
 sys/netlink/route/iface.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/netlink/route/iface.c b/sys/netlink/route/iface.c
index 399d2a8464ca..9f1dd9cec024 100644
--- a/sys/netlink/route/iface.c
+++ b/sys/netlink/route/iface.c
@@ -734,6 +734,7 @@ ifa_get_scope(const struct ifaddr *ifa)
         return (addr_scope);
 }
 
+#ifdef INET6
 static uint8_t
 inet6_get_plen(const struct in6_addr *addr)
 {
@@ -741,6 +742,7 @@ inet6_get_plen(const struct in6_addr *addr)
 	return (bitcount32(addr->s6_addr32[0]) + bitcount32(addr->s6_addr32[1]) +
 	    bitcount32(addr->s6_addr32[2]) + bitcount32(addr->s6_addr32[3]));
 }
+#endif
 
 static uint8_t
 get_sa_plen(const struct sockaddr *sa)