planner: insert point at correct position

Instead of inserting the point at the calculated
position, the DivePlannerPointsModel would append it
at the end and then resort the vector. That's just
silly.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>

qt-models/diveplannermodel.cpp

@@ -826,8 +826,7 @@ int DivePlannerPointsModel::addStop(int milimeters, int seconds, int cylinderid_
 	point.entered = entered;
 	point.divemode = divemode;
 	point.next = NULL;
-	divepoints.append(point);
-	std::sort(divepoints.begin(), divepoints.end(), divePointsLessThan);
+	divepoints.insert(divepoints.begin() + row, point);
 	endInsertRows();
 	return row;
 }