fix: should ignore getaddrinfo ENOTFOUND error

[fengmk2]

closes #21

[mention-bot]

@fengmk2, thanks for your PR! By analyzing the history of the files in this pull request, we identified @xudafeng to be a potential reviewer.

[codecov]

Codecov Report

Merging #22 into master will increase coverage by 0.35%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #22      +/-   ##
==========================================
+ Coverage   93.87%   94.23%   +0.35%     
==========================================
  Files           2        2              
  Lines          49       52       +3     
==========================================
+ Hits           46       49       +3     
  Misses          3        3

Impacted Files	Coverage Δ
lib/detect-port.js	94.11% <100%> (+0.36%)	⬆️

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[fengmk2]

1.1.3