The old code had a special case for dive-editing mode:
The dive site uuid of displayed_dive_site instead of displayed_dive
was used.
This makes no sense, because displayed_dive_site is only used by
the dive-site-edit widget, which firstly cannot be activated
during dive-edit and secondly doesn't change the dive site id
anyway.
Thus, use the dive site of the currently edited/displayed dive
in all cases.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
73b8bd12e5