fix: parent cmd is null

[caarlos0]

closes #119

[codecov]

Codecov Report

Merging #120 (9c1e38b) into main (66fb671) will increase coverage by 0.30%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main     #120      +/-   ##
==========================================
+ Coverage   24.50%   24.80%   +0.30%     
==========================================
  Files          15       15              
  Lines         657      649       -8     
==========================================
  Hits          161      161              
+ Misses        474      466       -8     
  Partials       22       22              

Impacted Files	Coverage Δ
cmd/chglog/main.go	0.00% <0.00%> (ø)
pkg/commands/add.go	0.00% <0.00%> (ø)
pkg/commands/commands.go	0.00% <ø> (ø)
pkg/commands/config.go	0.00% <0.00%> (ø)
pkg/commands/format.go	0.00% <0.00%> (ø)
pkg/commands/init.go	0.00% <0.00%> (ø)
pkg/commands/version.go	0.00% <0.00%> (ø)

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