bucket: avoid crashing on malformed expression (fix #3351)

[mmetc]

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[github-actions]

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• /kind feature
• /kind enhancement
• /kind refactoring
• /kind fix
• /kind chore
• /kind dependencies

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[github-actions]

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• /area agent
• /area local-api
• /area cscli
• /area appsec
• /area security
• /area configuration

Details

I am a bot created to help the crowdsecurity developers manage community feedback and contributions. You can check out my manifest file to understand my behavior and what I can do. If you want to use this for your project, you can check out the BirthdayResearch/oss-governance-bot repository.

[codecov]

Codecov Report

Attention: Patch coverage is 40.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 58.37%. Comparing base (b1e2b95) to head (0b722bb).

Files with missing lines	Patch %	Lines
pkg/leakybucket/uniq.go	40.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3368      +/-   ##
==========================================
- Coverage   58.40%   58.37%   -0.04%     
==========================================
  Files         351      351              
  Lines       37879    37878       -1     
==========================================
- Hits        22125    22113      -12     
- Misses      13843    13850       +7     
- Partials     1911     1915       +4     

Flag	Coverage Δ
bats	41.22% <40.00%> (-0.04%)	⬇️
unit-linux	34.37% <40.00%> (-0.02%)	⬇️
unit-windows	29.60% <40.00%> (-0.02%)	⬇️

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[mmetc]

this has issues, we should compile on bucket load. see also #3371