Reset bit lengths if the value of bit 20 gets too high.
Reset bit lengths if the value of bit 20 gets too high.

Reset the bit lengths if the length of bit 20 gets too high instead of
forcing the value of bit 20 to be 1. This also covers for the value
of bit 0 getting too low and simplifies the code a bit.

rene0/dcf77pi,rene0/dcf77pi