(issue1754) Increase m index after adding an interpolated result. At this point we have added a result for this km of the minuend by interpolating the corresponding s value. So we can take a look at the next KM. Not doing this could lead to duplicated results in this calculation.

select.abflusstafel = \
    SELECT ABFLUSSTAFEL_NR, \
           ABFLUSSTAFEL_BEZ, \
           GUELTIG_VON, \
           GUELTIG_BIS, \
           PEGELNULLPUNKT, \
           AT.BFG_ID \
    FROM ABFLUSSTAFEL AT \
    WHERE MESSSTELLE_NR LIKE :number