bug: fix Unix address parsing absolute path

[panjf2000]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 91.66667% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 82.46%. Comparing base (1e690fc) to head (64c6e33).
⚠️ Report is 1 commits behind head on dev.

Files with missing lines	Patch %	Lines
client_windows.go	33.33%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #731      +/-   ##
==========================================
+ Coverage   82.33%   82.46%   +0.13%     
==========================================
  Files          22       22              
  Lines        2926     2915      -11     
==========================================
- Hits         2409     2404       -5     
+ Misses        392      389       -3     
+ Partials      125      122       -3     

Flag	Coverage Δ
unittests	82.46% <91.66%> (+0.13%)	⬆️

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