fix type conversion

[jinglina]

fix redundant type conversion

[codecov]

Codecov Report

Merging #2921 (a5bc125) into master (56af6b4) will increase coverage by 0.03%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #2921      +/-   ##
==========================================
+ Coverage   95.91%   95.94%   +0.03%     
==========================================
  Files         223      223              
  Lines        9708     9708              
==========================================
+ Hits         9311     9314       +3     
+ Misses        328      325       -3     
  Partials       69       69              

Impacted Files	Coverage Δ
model/converter/thrift/jaeger/from_domain.go	100.00% <100.00%> (ø)
plugin/storage/integration/integration.go	77.90% <0.00%> (+0.55%)	⬆️
...lugin/sampling/strategystore/adaptive/processor.go	100.00% <0.00%> (+0.92%)	⬆️

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Pull request has been modified.