Compilation problem fixed in current but not in 4 stable

["Gerald Lee" <glee%force10networks.com@localhost>]

        Compiling for an EV64260, I got an error building tcp_usrreq.
The issue relates to the static function inet6_ident_core not being
behind an INET6 ifdef.  Diff below.
--

RCS file: /cvsroot/src/sys/netinet/tcp_usrreq.c,v
retrieving revision 1.129.2.1
diff -c -r1.129.2.1 tcp_usrreq.c
*** tcp_usrreq.c        21 Jan 2008 20:17:48 -0000      1.129.2.1
--- tcp_usrreq.c        24 Jan 2008 19:31:46 -0000
***************
*** 1150,1155 ****
--- 1150,1156 ----
                return copyout_uid(sockp, oldp, oldlenp);
  }
  
+ #ifdef INET6
  static inline int
  inet6_ident_core(struct in6_addr *raddr, u_int rport,
      struct in6_addr *laddr, u_int lport,
***************
*** 1180,1185 ****
--- 1181,1187 ----
        else
                return copyout_uid(sockp, oldp, oldlenp);
  }
+ #endif
  
  /*
   * sysctl helper routine for the net.inet.tcp.drop and