K 10 svn:author V 7 rwatson K 8 svn:date V 27 2005-08-15T09:54:00.000000Z K 7 svn:log V 250 Merge if_atm.c:1.20 from HEAD to RELENG_6: Add NATM_LOCK() and NATM_UNLOCK() in places where npcb_add() and npcb_free() are called, in order to eliminate witness panics. This was overlooked in removal of GIANT from ATM. Approved by: re (hrs) END