Fix false positive in empty_enum_arguments rule

[marcelofabri]

Fixes #1597

[SwiftLintBot]

	12 Messages
📖	Linting Aerial with this PR took 0.35s vs 0.33s on master (6% slower)
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📖	Linting Nimble with this PR took 1.29s vs 1.28s on master (0% slower)
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📖	Linting Realm with this PR took 2.01s vs 2.01s on master (0% slower)
📖	Linting SourceKitten with this PR took 0.86s vs 0.85s on master (1% slower)
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📖	Linting Swift with this PR took 9.21s vs 9.24s on master (0% faster)
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[codecov-io]

Codecov Report

Merging #1598 into master will increase coverage by 0.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #1598      +/-   ##
==========================================
+ Coverage   84.24%   84.26%   +0.01%     
==========================================
  Files         192      192              
  Lines        9979     9991      +12     
==========================================
+ Hits         8407     8419      +12     
  Misses       1572     1572

Impacted Files	Coverage Δ
...ftLintFramework/Rules/EmptyEnumArgumentsRule.swift	97.05% <100%> (+0.63%)	⬆️

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[jpsim]

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