2005-05-11 Paul Jakma <paul.jakma@sun.com>

	* (general) Fix memory leaks in opaque AS-scope LSAs, reported and
	  with much debugging done by by scott collins <scollins@agile.tv>.
	  (possible backport candidate?)
	* ospf_lsa.c: (ospf_discard_from_db) dont call
	  ospf_ase_unregister_external_lsa for opaque-lsa's, opaques are
	  never registered with ase in the first place.
	* ospf_packet.c: (general) Disabuse opaque related code of its
          tendency to try gather up things into temporary lists.
          (ospf_ls_upd) remove the temporary lists opaque uses, call
          opaque functions inline, just like all other types.
          (ospf_ls_ack) ditto.
          (ospf_recv_packet) fixup sign warning.
        * ospf_opaque.c: (general) fix the unneeded use of lists, and
          untwist some of the logic.
          (ospf_opaque_self_originated_lsa_received) take a single LSA
          as argument, not a list of them. Remove the list loop. Logic
          otherwise unchanged.
          (ospf_opaque_ls_ack_received) Mostly ditto. But untwist the logic,
          move the actions up into the switch block, remove the goto's and
          sanitise the logic near the end a bit.
        * ospf_opaque.h: Adjust definitions of aforementioned functions
          in ospf_opaque.c to match.

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