No volume conservation for BDY with vvl and dynspg_ts

[joakim]

The namelist parameter ln_vol under nambdy activates a correction so that the total volume of the domain is conserved, even if the open boundary conditions are divergent.
This correction is called from dyn_spg_flt, but not from dyn_spg_ts.
Hence, volume correction does not apply when using key_dynspg_ts.
The following is in dynnxt.F90:

# if defined key_bdy
      !                                !* BDY open boundaries
      IF( lk_bdy .AND. lk_dynspg_exp ) CALL bdy_dyn( kt )
      IF( lk_bdy .AND. lk_dynspg_ts  ) CALL bdy_dyn( kt, dyn3d_only=.true. )

!!$   Do we need a call to bdy_vol here??
      !
# endif

Adding something like

IF( lk_bdy .AND. lk_dynspg_ts  ) CALL bdy_vol( kt )

into this subroutine might fix the problem.

/Joakim