Get rid of even more T.musts

Co-authored-by: Mike McQuaid <[email protected]>

Library/Homebrew/dev-cmd/bump-formula-pr.rb

@@ -558,7 +558,9 @@ def run_audit(formula, alias_rename, old_contents)
  end
  return
  end
- FileUtils.mv T.must(alias_rename.first), T.must(alias_rename.last) if alias_rename.present?
+ if alias_rename && (source = alias_rename.first) && (destination = alias_rename.last)
+ FileUtils.mv source, destination
+ end
  failed_audit = false
  if args.no_audit?
  ohai "Skipping `brew audit`"
@@ -572,7 +574,9 @@ def run_audit(formula, alias_rename, old_contents)
  return unless failed_audit
 
  formula.path.atomic_write(old_contents)
- FileUtils.mv T.must(alias_rename.last), T.must(alias_rename.first) if alias_rename.present?
+ if alias_rename && (source = alias_rename.first) && (destination = alias_rename.last)
+ FileUtils.mv source, destination
+ end
  odie "`brew audit` failed!"
  end
  end