force_unwrapping is not fired for trailing closures syntax

[Igor-Palaguta]

New Issue Checklist

• Updated SwiftLint to the latest version
• I searched for existing GitHub issues

Describe the bug

force_unwrapping is not fired for trailing closures syntax

let value = [1, 3, 5, 6].first { $0.isMultiple(of: 2) }!

Same case but with parentheses around works fine

let value = [1, 3, 5, 6].first({ $0.isMultiple(of: 2) })!

Complete output when running SwiftLint, including the stack trace and command used

E.g. for this case superfluous_disable_command rule is fired

let value = [1, 3, 5, 6].first { $0.isMultiple(of: 2) }! // swiftlint:disable:this force_unwrapping

$ swiftlint lint

Superfluous Disable Command Violation: SwiftLint rule 'force_unwrapping' did not trigger a violation in the disabled region. Please remove the disable command. (superfluous_disable_command)

Environment

• SwiftLint version (run swiftlint version to be sure)?
  0.35.0
• Installation method used (Homebrew, CocoaPods, building from source, etc)?
  CocoaPods
• Paste your configuration file:

opt_in_rules:
  - force_unwrapping

• Are you using nested configurations?
  no
• Which Xcode version are you using (check xcode-select -p)?
  Version 11.1 (11A1027)
• Do you have a sample that shows the issue? Run echo "let value = [1, 3, 5, 6].first { $0.isMultiple(of: 2) }!" | swiftlint lint --no-cache --use-stdin --enable-all-rules
  to quickly test if your example is really demonstrating the issue. If your example is more
  complex, you can use swiftlint lint --path [file here] --no-cache --enable-all-rules.

// This triggers a violation:
let value = [1, 3, 5, 6].first { $0.isMultiple(of: 2) }!

[cndouglas]

This is still a problem with the latest version of SwiftLint (0.40.3).

[stale]

This issue has been automatically marked as stale because it has not had any recent activity. Please comment to prevent this issue from being closed. Thank you for your contributions!

[cndouglas]

This is still a problem with the latest version of SwiftLint (0.42.0).