Merge 232685 from head:

Merge 232685 from head:
  Merge from OpenBSD:

    revision 1.146
    date: 2010/05/12 08:11:11;  author: claudio;  state: Exp;  lines: +2 -3
    bzero() the full compressed update struct before setting the values.
    This is needed because pf_state_peer_hton() skips some fields in certain
    situations which could result in garbage beeing sent to the other peer.
    This seems to fix the pfsync storms seen by stephan@ and so dlg owes me
    a whiskey.

  I didn't see any storms, but this definitely fixes a useless memory
  allocation on the receiving side, due to non zero scrub_flags field
  in a pfsync_state_peer structure.

git-svn-id: svn://svn.freebsd.org/base/stable/9@233275 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f