rm_leaf
KASSERT((m->rm_leaf->rn_flags &
return (m->rm_leaf);
m->rm_leaf = tt;
if (m->rm_leaf->rn_p == tt)
m->rm_leaf = tt;
for (t = m->rm_leaf;
mmask = m->rm_leaf->rn_mask;
if (m->rm_leaf != tt && m->rm_refs == 0) {
if (m->rm_leaf != tt) {
m->rm_leaf = tt->rn_dupedkey;