More correct fix previous bag

[tonal]

В одном из DBF-оф наткнулся на такую ситуацию, когда в поле после значения и \0 идут остатки прошлых данных.
К сожалению файл не сохранился.
Читалки на C никаких неудобств не испытывают, т. к. строка естественным образом обрывается \0

[jacobsvante]

Unfortunately I don't know Russion, but I do know that @tonal's branch works for me and the official pypi version does not. Are you the official author of ydbf, @j2a? And if so, could you merge in @tonal's changes and publish to pypi?

Thanks,
Jacob

[y10h]

Translation:

I have case when in one of the DBF files I see some weird data after \0, it seems like some garbage from previous entries. Unfortunately I don't have example. Eventually, DBF readers written in C doesn't have any issues because they stop reading string at null termination.

Jacob, it would be very helpful if you give me example of such file. Then I will write a test and merge this changes.