fix: handle 0.0.0.0:port binding

[fengmk2]

No description provided.

[codecov]

Codecov Report

Merging #26 into master will decrease coverage by 1.5%.
The diff coverage is 85.71%.

@@            Coverage Diff             @@
##           master      #26      +/-   ##
==========================================
- Coverage   94.23%   92.72%   -1.51%     
==========================================
  Files           2        2              
  Lines          52       55       +3     
==========================================
+ Hits           49       51       +2     
- Misses          3        4       +1

Impacted Files	Coverage Δ
lib/detect-port.js	92.59% <85.71%> (-1.53%)	⬇️

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