Fix false positive in empty_enum_arguments rule when using closures

[marcelofabri]

Fixes #2041

[SwiftLintBot]

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[codecov-io]

Codecov Report

Merging #2044 into master will decrease coverage by 0.02%.
The diff coverage is 83.33%.

@@            Coverage Diff             @@
##           master    #2044      +/-   ##
==========================================
- Coverage   89.66%   89.63%   -0.03%     
==========================================
  Files         256      256              
  Lines       14889    14886       -3     
  Branches      969      969              
==========================================
- Hits        13350    13343       -7     
- Misses       1521     1525       +4     
  Partials       18       18

Impacted Files	Coverage Δ
...ftLintFramework/Rules/EmptyEnumArgumentsRule.swift	94.05% <83.33%> (-4.02%)	⬇️

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