This stops stealing pointer ownership, and will also make sure the TRACE
messages contain the truncated family names, that are actually compared.

Also rename the fields to make them consistent with most Wine internal
coding style.
Signed-off-by: Rémi Bernon <rbernon@codeweavers.com>
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>