NFSV4OPEN_CLAIMNULL
*tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
*tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
*tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
*tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
if (claim == NFSV4OPEN_CLAIMNULL || claim == NFSV4OPEN_CLAIMDELEGATECUR
claim != NFSV4OPEN_CLAIMNULL)