bors b02a6193b3 Auto merge of #81937 - ssomers:btree_drainy_refactor_9b, r=Mark-Simulacrum
BTree: move more shared iterator code into navigate.rs

The functions in navigate.rs only exist to support iterators, and these look easier on my eyes if there is a shared `struct` with the recurring pair of handles.

r? `@Mark-Simulacrum`
2021-02-23 00:30:37 +00:00
..
2021-02-13 11:18:36 +08:00
2021-01-07 16:16:36 +09:00