net-mgmt/ng_ipacct: Fix build on 14.0.

src commit 0f617ae48a911caab3130d0e80cfb425bc3b653b moved the
prototype of in_pcblookup_local to a new header.

src commit 28d0a740dd9a6 added "opt_kern_tls.h" #include to
<netinet/tcp_var.h>.

PR: 266556
Differential Revision: https://reviews.freebsd.org/D36546