Clean up the environment variables created by the parent process for …

[David-wanghw]

…the next call.

[codecov]

Codecov Report

Merging #70 into master will not change coverage.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##           master      #70   +/-   ##
=======================================
  Coverage   15.89%   15.89%           
=======================================
  Files          10        8    -2     
  Lines         258      258           
=======================================
  Hits           41       41           
  Misses        212      212           
  Partials        5        5           

Impacted Files	Coverage Δ
daemon_unix.go	0.00% <0.00%> (ø)
syscall_dup.go
os_executable.go

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[NorseGaud]

This seems to work, but I have no idea what the scenario is to test. @David-wanghw , any ideas?

Also, shouldn't d.clearEnv() come at the top of the child function?

[sevlyar]

The change may break backward compatibility: function WasReborn() won't work properly after Reborn() call.