dtrace_match_nul
return (&dtrace_match_nul);
pkp->dtpk_pmatch == &dtrace_match_nul &&
pkp->dtpk_mmatch == &dtrace_match_nul &&
pkp->dtpk_fmatch == &dtrace_match_nul &&
pkp->dtpk_nmatch == &dtrace_match_nul)
pkey.dtpk_mmatch = mod ? &dtrace_match_string : &dtrace_match_nul;
pkey.dtpk_fmatch = func ? &dtrace_match_string : &dtrace_match_nul;
pkey.dtpk_nmatch = name ? &dtrace_match_string : &dtrace_match_nul;