bors 03b845a41f Auto merge of #85980 - ssomers:btree_cleanup_LeafRange, r=Mark-Simulacrum
BTree: encapsulate LeafRange better & some debug asserts

Looking at iterators again, I think #81937 didn't house enough code in `LeafRange`. Moving the API boundary a little makes things more local in navigate.rs and less complicated in map.rs.

r? `@Mark-Simulacrum`
2021-06-20 22:52:49 +00:00
..