rtree_search() result is not checked in MemtxRTree::initIterator()

[rtsisyk]

rtree_search() result is not checked in MemtxRTree::initIterator():

void
252MemtxRTree::initIterator(struct iterator *iterator, enum iterator_type type,
253                         const char *key, uint32_t part_count) const
254{

 [CUT]

292        case ITER_NEIGHBOR:
293                op = SOP_NEIGHBOR;
294                break;
295        default:
296                return Index::initIterator(iterator, type, key, part_count);
297        }
   CID 1398676 (#1 of 1): Unchecked return value (CHECKED_RETURN)6. check_return: Calling rtree_search without checking return value (as is done elsewhere 28 out of 31 times).
298        rtree_search(&m_tree, &rect, op, &it->impl);

rtree_remove() result is not checked in test/unit/rtree_multidim.cc:

484template<unsigned DIMENSION>
485static void
486rand_test()
487{

[CUT]

509                if (insert) {
510                        CBox<DIMENSION> box;
511                        box.Randomize();
512                        size_t id = set.AddBox(box);
513                        struct rtree_rect rt;
514                        box.FillRTreeRect(&rt);
515                        rtree_insert(&tree, &rt, (void *)(id + 1));
   6. Falling through to end of if statement.
   13. Falling through to end of if statement.
516                } else {
517                        size_t id = set.RandUsedID();
518                        struct rtree_rect rt;
519                        set.entries[id].box.FillRTreeRect(&rt);
   CID 1398672 (#5-1 of 5): Unchecked return value (CHECKED_RETURN)21. check_return: Calling rtree_remove without checking return value (as is done elsewhere 6 out of 7 times).
520                        rtree_remove(&tree, &rt, (void *)(id + 1));
521                        set.DeleteBox(id);
522                }

[PersDep]

Well, right, now there are rtree_search() usages in memtx_rtree_index_create_iterator() in memtx_rtree.c and in iterator_invalidate_check() in rtree_iterator.cc but it is not a problem as far as iterator is initialized correctly anyway. There is nothing we need to do here.