The check if both location and site exist was flawed causing an extra
slash on location name when the SITE was empty. Thus resulting in
multiple location candidates when exporting to divelogs.de and
re-importing to Subsurface.
Signed-off-by: Miika Turkia <miika.turkia@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>