chore: Fix SwiftLint warnings

[hassila]

Description

Fix SwiftLint warnings.

[github-actions]

Pull request benchmark comparison [ubuntu-latest] with 'main' run at 2023-02-08T08:01:08+00:00

[codecov]

Codecov Report

Merging #53 (6d16850) into main (2d5a871) will not change coverage.
The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #53   +/-   ##
=======================================
  Coverage   83.41%   83.41%           
=======================================
  Files          18       18           
  Lines        2091     2091           
=======================================
  Hits         1744     1744           
  Misses        347      347           

Impacted Files	Coverage Δ
...ort/MallocStats/MallocStatsProducer+jemalloc.swift	59.81% <100.00%> (ø)

Impacted Files	Coverage Δ
...ort/MallocStats/MallocStatsProducer+jemalloc.swift	59.81% <100.00%> (ø)

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