fix(fight): Fighter#cell() called when fighter is not on cell #327

[codecov[bot]]

Codecov Report

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

Comparison is base (c4ef41f) 96.31% compared to head (6e2fbc4) 96.30%. Report is 1 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #328 +/- ## ============================================ - Coverage 96.31% 96.30% -0.02% - Complexity 8941 8942 +1 ============================================ Files 1393 1393 Lines 22792 22799 +7 Branches 1425 1426 +1 ============================================ + Hits 21952 21956 +4 - Misses 638 639 +1 - Partials 202 204 +2 ```

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