Fix golint error in proxy

[czs007]

Signed-off-by: zhenshan.cao zhenshan.cao@zilliz.com

[sre-ci-robot]

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[codecov]

Codecov Report

Merging #10486 (ee3e874) into master (bc08395) will increase coverage by 0.06%.
The diff coverage is 55.55%.

@@            Coverage Diff             @@
##           master   #10486      +/-   ##
==========================================
+ Coverage   78.76%   78.83%   +0.06%     
==========================================
  Files         437      437              
  Lines       55217    55217              
==========================================
+ Hits        43493    43530      +37     
+ Misses       9509     9477      -32     
+ Partials     2215     2210       -5     

Impacted Files	Coverage Δ
internal/proxy/task.go	72.60% <50.00%> (ø)
internal/proxy/validate_util.go	88.16% <100.00%> (ø)
internal/indexnode/task.go	61.18% <0.00%> (-1.87%)	⬇️
internal/querycoord/querynode.go	67.21% <0.00%> (-0.82%)	⬇️
internal/querynode/task.go	78.73% <0.00%> (-0.71%)	⬇️
internal/querynode/collection_replica.go	84.83% <0.00%> (ø)
internal/querycoord/task.go	85.95% <0.00%> (+0.22%)	⬆️
internal/proxy/impl.go	81.38% <0.00%> (+0.41%)	⬆️
internal/rootcoord/meta_table.go	80.06% <0.00%> (+0.51%)	⬆️
...ternal/util/rocksmq/server/rocksmq/rocksmq_impl.go	75.41% <0.00%> (+0.66%)	⬆️
... and 5 more

[XuanYang-cn]

/lgtm