Fix getting cask path for queries.

Library/Homebrew/cask/lib/hbc/cask_loader.rb

Library/Homebrew/cask/lib/hbc/locations.rb

Library/Homebrew/cask/lib/hbc/qualified_token.rb

Library/Homebrew/cask/lib/hbc/source/path_base.rb

Library/Homebrew/cask/lib/hbc/source/tapped.rb

Library/Homebrew/cask/lib/hbc/source/tapped_qualified.rb

Library/Homebrew/cask/lib/hbc/source/untapped_qualified.rb

Library/Homebrew/compat.rb

Library/Homebrew/compat/hbc.rb

Library/Homebrew/compat/hbc/cask_loader.rb