(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.

CLASS
    NAME "Ringdeich"
    EXPRESSION /ringdeich/i
    STYLE
        SIZE 5
        OUTLINECOLOR "#FF8000"
    END
END