FILTER_MAV bug

[PhilipInc]

Hello,

FILTER_MAV function works wrong if the values goes down.

ELSE
   tmp := UINT_TO_INT(N);
   i := INC1(i, tmp);
   Y := Y + (X - buffer) / N;
   buffer := X;
END_IF;

when buffer is bigger than X their difference going bellow 0 and become very large.

[Yamonaru]

We are happy to provide these useful information to everyone.

[hanoisss]

This review is the best.