Subscript out of bounds on river tracer source

[kate]

forrtl: severe (408): fort: (2): Subscript #2 of the array HVOM has value 73 which is greater than the upper bound of 72

Image              PC                Routine            Line        Source             
oceanG             000000000305D9E6  Unknown               Unknown  Unknown
oceanG             00000000014BED29  step3d_t_mod_mp_s         703  step3d_t.f90
oceanG             00000000014622DA  step3d_t_mod_mp_s          78  step3d_t.f90

On this particular tile, Hvom is dimensioned (0:326,0:72), but the test goes out to Jendp3 which is 73:

                  IF ((Hadvection(itrc,ng)%MPDATA).or.                    &
       &              (Hadvection(itrc,ng)%HSIMT)) THEN
                    LapplySrc=(IstrUm2.le.Isrc).and.                      &
       &                      (Isrc.le.Iendp2i).and.                      &
       &                      (JstrVm2.le.Jsrc).and.                      &
       &                      (Jsrc.le.Jendp3)

I have HSIMT set for the advection type in this case. This is probably not a new bug and I in fact stumbled on it when trying to track something else down.