whitespace fixes

Library/Homebrew/brew.sh

Library/Homebrew/cask/artifact/relocated.rb

Library/Homebrew/cask/exceptions.rb

Library/Homebrew/cmd/gist-logs.rb

Library/Homebrew/cmd/vendor-install.sh

Library/Homebrew/dev-cmd/update-test.rb

Library/Homebrew/exceptions.rb

Library/Homebrew/extend/ENV/std.rb

Library/Homebrew/extend/pathname.rb

Library/Homebrew/formula_cellar_checks.rb

Library/Homebrew/install.rb

Library/Homebrew/migrator.rb

Library/Homebrew/requirement.rb

Library/Homebrew/rubocops/extend/formula.rb

Library/Homebrew/rubocops/patches.rb

Library/Homebrew/test/options_spec.rb

Library/Homebrew/test/rubocops/patches_spec.rb

Library/Homebrew/utils/gems.rb

Library/Homebrew/utils/github.rb