Berthold Stoeger b5704ddb57 Cleanup: Remove MultiFilterSortModel::model
The source-model was cached in MultiFilterSortModel. For simplicity,
remove that and simply access via DiveTripModel::instance(). There
is only one instance where the cached model was used: when comparing
items for sorting. Thus, in indirection is added in a "hot" path.
Nevertheless, this will dwarf against the cost of string comparison.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-01-07 09:33:52 -08:00
..
2018-09-29 15:23:25 -07:00