JRA               230 source3/include/smb_macros.h NULL returns on zero request. JRA.
JRA              2963 source3/lib/util.c NULL returns on zero request. JRA.
JRA               101 source3/libaddns/dns.h NULL returns on zero request. JRA.
JRA              3405 source3/libads/ldap.c    SAVED CODE - we used to join via ldap - remember how we did this. JRA.