Use sum directly

[grzegorz-jakubiak]

As in title I replaced map.inject and/or map.sum with sum

[codecov]

Codecov Report

Merging #32 into master will not change coverage.
The diff coverage is 66.66%.

@@           Coverage Diff           @@
##           master      #32   +/-   ##
=======================================
  Coverage   81.75%   81.75%           
=======================================
  Files          19       19           
  Lines         296      296           
=======================================
  Hits          242      242           
  Misses         54       54

Impacted Files	Coverage Δ
...ib/skunk/rubycritic/analysed_modules_collection.rb	87.5% <100%> (ø)	⬆️
lib/skunk/cli/commands/status_reporter.rb	97.56% <50%> (ø)	⬆️

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[etagwerker]

@grzegorz-jakubiak I think this is a good idea. The only problem is that Array#sum was introduced in Ruby 2.4, so it might make skunk not work with Ruby < 2.3 versions.