Fix bug in reverse_adaptor::for_each_while

[tcbrindle]

We only need to increment the base cursor if we break out the loop early

Fixes #182

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 98.07%. Comparing base (b8047a5) to head (b46f056).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #183 +/- ## ======================================= Coverage 98.07% 98.07% ======================================= Files 69 69 Lines 2440 2441 +1 ======================================= + Hits 2393 2394 +1 Misses 47 47 ```

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