Fix redundant_pattern_matching misses ) in suggestion span

[profetia]

Closes #14989

changelog: [redundant_pattern_matching] fix missing ) in suggestion span

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[rustbot]

This PR was rebased onto a different master commit. Here's a range-diff highlighting what actually changed.

Rebasing is a normal part of keeping PRs up to date, so no action is needed—this note is just to help reviewers.