Fix go lint issues

[cleptric]

#824 introduced changes resulting in the lint CI checks failing.

[codecov]

Codecov Report

Attention: Patch coverage is 87.50000% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 81.83%. Comparing base (3192e9f) to head (95b65eb).

Files	Patch %	Lines
transport.go	87.50%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #825      +/-   ##
==========================================
+ Coverage   81.73%   81.83%   +0.09%     
==========================================
  Files          50       50              
  Lines        4434     4436       +2     
==========================================
+ Hits         3624     3630       +6     
+ Misses        660      659       -1     
+ Partials      150      147       -3     

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