chore: safe delete

[codecov-commenter]

Codecov Report

Attention: 11 lines in your changes are missing coverage. Please review.

Comparison is base (7fcf04b) 78.27% compared to head (89001ba) 78.12%.

Files	Patch %	Lines
util/fibers/listener_interface.cc	67.64%	11 Missing :warning:

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #174 +/- ## ========================================== - Coverage 78.27% 78.12% -0.16% ========================================== Files 98 98 Lines 7265 7281 +16 ========================================== + Hits 5687 5688 +1 - Misses 1578 1593 +15 ```

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