don't quit listener after a temporary accept error

[drakkan]

Fixes #210

[codecov]

Codecov Report

Merging #211 (6362b7e) into master (6026640) will increase coverage by 0.38%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #211      +/-   ##
==========================================
+ Coverage   78.90%   79.29%   +0.38%     
==========================================
  Files           9        9              
  Lines        1209     1222      +13     
==========================================
+ Hits          954      969      +15     
+ Misses        171      169       -2     
  Partials       84       84              

Impacted Files	Coverage Δ
server.go	65.82% <100.00%> (+9.76%)	⬆️

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