Add a forgotten newline.
readpin: various fixes for tunetime:

- change assignment to 'twait' to make it more readable
- only do post-sleep calculations when tunetime is active
readpin: change sleep period from (10^9 / hw->freq) ns to (10^9 / hw->freq^2 * realfreq) ns

For hw-> freq = 1000 Hz, this improves hw->realfreq from 848 Hz to 910 Hz
and 858 Hz to 920 Hz with tunetime.
Adjust sleep time in get_bit_live() as in commit 8441795bc3007f0f6cab6c6bc64f902285f40a8f
input.c: do not adjust the length of bit0 or bit20 in case of reception errors or end-of-minute.