divide-by-zero

[MegaManSec]

Hi,

In aiff.c, in the aiff_rewrite_header, a divide-by-zero may occur resulting in a crash.

1119 psf_fwrite (psf->header, psf->headindex, 1, psf) ;

If all of the previous 'k = [...]'s fail, headindex will be 0, and psf_fwrite uses it as a division.

Thanks,

[erikd]

Fixed in the above commit.