free_mapping_element
extern void free_mapping_element(__nis_mapping_element_t *e);
free_mapping_element(e);
free_mapping_element(&e[i]);
free_mapping_element(e);
free_mapping_element(e);
free_mapping_element(element);
free_mapping_element(elmnt);
free_mapping_element(elmnt);
free_mapping_element(&r->element[i]);
free_mapping_element(e1++);
free_mapping_element(&r->element[i]);
free_mapping_element(&mapping->e[i]);
free_mapping_element(
free_mapping_element(&out->e[i - 1]);