[bgpd] struct peer must have bgp field valid (redistribute crash)

[bgpd] struct peer must have bgp field valid (redistribute crash)

2006-10-19 Paul Jakma <paul.jakma@sun.com>

	* bgpd.c: (peer_new) bgp element of peer absolutely must be
	  filled in, make peer_new() require it as argument and update
	  all callers. Fixes a crash reported by Jan 'yanek' Bortl and
	  Andrew Schorr where bgpd would crash in bgp_pcount_adjust
	  trying to dereference the bgp member of bgp->peer_self,
	  triggered through redistribution.
	* bgp_route.c: (bgp_pcount_adjust) assert sanity of arguments.