rm_leaf
return (m->rm_leaf);
m->rm_leaf = tt;
mmask = m->rm_leaf->rn_mask;
if (m->rm_leaf != tt || m->rm_refs > 0) {
return (m->rm_leaf);
m->rm_leaf = tt;
mmask = m->rm_leaf->rn_mask;
if (m->rm_leaf != tt || m->rm_refs > 0) {