[zebra] IRDP: Move stream_free to where its created, probably fixing a leak

[zebra] IRDP: Move stream_free to where its created, probably fixing a leak

2006-08-01 Paul Jakma <paul.jakma@sun.com>

	* irdp_main.c: (irdp_advertisement) free the stream here, when done,
	  right under where it was allocated so it's blindingly obvious
	  it's correct. This possibly fixes a very slow leak of streams in
	  zebra.
	* irdp_packet.c: (send_packet) don't free the stream here as
	  it's hard to tell if right, plus an error case seemed to
	  returning before free anyway.