fix_2warnings.diff: I don't like statement like (void)err; to kill a compiler warning. I prefer GCC __attribute__((unused)) using a macro instead. About the change on unicode_fromascii, the code changed a lot since the patch was written. The patch is outdated and not really interesting. Please open a new issue with a new patch if there are remaining warnings.

I'm closing the issue because I agree with Martin von Loewis, it's better to open new issues for each warning (warning class?).