replace m_copym2 with m_dup_pkt in pfkey.c

[David Gwynne]

ok?

Index: pfkey.c
===================================================================
RCS file: /cvs/src/sys/net/pfkey.c,v
retrieving revision 1.29
diff -u -p -r1.29 pfkey.c
--- pfkey.c     22 Mar 2016 11:53:21 -0000      1.29
+++ pfkey.c     22 Mar 2016 12:07:25 -0000
@@ -142,7 +142,7 @@ pfkey_sendup(struct socket *socket, stru
        int s;
 
        if (more) {
-               if (!(packet2 = m_copym2(packet, 0, M_COPYALL, M_DONTWAIT)))
+               if (!(packet2 = m_dup_pkt(packet, 0, M_DONTWAIT)))
                        return (ENOMEM);
        } else
                packet2 = packet;