Minor clean-up after #3640

[yurishkuro]

#3640

[codecov]

Codecov Report

Merging #3653 (ac45530) into main (99ec00f) will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #3653      +/-   ##
==========================================
+ Coverage   96.50%   96.52%   +0.01%     
==========================================
  Files         265      265              
  Lines       15581    15581              
==========================================
+ Hits        15036    15039       +3     
+ Misses        455      454       -1     
+ Partials       90       88       -2     

Impacted Files	Coverage Δ
cmd/collector/app/server/zipkin.go	68.29% <0.00%> (-2.44%)	⬇️
pkg/config/tlscfg/cert_watcher.go	92.63% <0.00%> (-2.11%)	⬇️
plugin/storage/badger/spanstore/reader.go	96.21% <0.00%> (+0.70%)	⬆️
cmd/query/app/static_handler.go	97.60% <0.00%> (+1.79%)	⬆️

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