Uninitialized do_i values in MOM_tracer_advect.F90:advect_x()

[adcroft]

The contents of do_i(i+1,j) are not initialized at I=ie when used in the loops at https://github.com/NOAA-GFDL/MOM6/blob/dev/gfdl/src/tracer/MOM_tracer_advect.F90#L707

      if (associated(Tr(m)%ad_x)) then ; do I=is-1,ie ; if (do_i(i,j) .or. do_i(i+1,j)) then
        Tr(m)%ad_x(I,j,k) = Tr(m)%ad_x(I,j,k) + flux_x(I,j,m)*Idt
      endif ; enddo ; endif

and https://github.com/NOAA-GFDL/MOM6/blob/dev/gfdl/src/tracer/MOM_tracer_advect.F90#L737

      do I=is-1,ie ; if (do_i(i,j) .or. do_i(i+1,j)) then
        Tr(m)%ad2d_x(I,j) = Tr(m)%ad2d_x(I,j) + flux_x(I,j,m)*Idt
      endif ; enddo