Fix error when git upstream branch is deleted

[neomilium]

Fixes issue #81

[codecov]

Codecov Report

Merging #240 (3206d62) into master (aa0ab36) will increase coverage by 0.10%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #240      +/-   ##
==========================================
+ Coverage   84.13%   84.24%   +0.10%     
==========================================
  Files          30       30              
  Lines         889      895       +6     
==========================================
+ Hits          748      754       +6     
  Misses        141      141              

Impacted Files	Coverage Δ
features/step_definitions/git_steps.rb	95.23% <100.00%> (+0.36%)	⬆️
lib/modulesync/repository.rb	89.89% <100.00%> (ø)
spec/helpers/faker/puppet_module_remote_repo.rb	86.25% <100.00%> (+0.53%)	⬆️

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[bastelfreak]

hey @neomilium, thanks for all the work. I sent you an inivitation to join the Vox Pupuli GitHub org.

[neomilium]

hey @neomilium, thanks for all the work.

You are welcome.

I sent you an inivitation to join the Vox Pupuli GitHub org.

Thanks!

[bastelfreak]

I told GitHub to send it again. The UI doesn't tell me to which email address it goes, probably the default one from your profile.

[neomilium]

Got it!