Fix some clippy findings

[lukasmittag]

there were some new clippy findings that broke the lint workflow this is a fix for it

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.

Project coverage is 60.11%. Comparing base (86ed421) to head (27314e2).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
databroker/src/viss/v2/server.rs	0.00%	2 Missing ⚠️
databroker/src/main.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #129      +/-   ##
==========================================
- Coverage   60.15%   60.11%   -0.04%     
==========================================
  Files          33       33              
  Lines       16191    16191              
==========================================
- Hits         9739     9733       -6     
- Misses       6452     6458       +6     

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[mikehaller]

LGTM