Annodex #1581: Apply patch from keelerda
Annodex #1581: Apply patch from keelerda

oggz_comments_decode calls _oggz_comment_add_byname with "value" as NULL
under certain situations. This can then sometimes cause
_oggz_comment_add_byname to try to run strcmp on NULL, which fails.

kfish/liboggz,brion/liboggz,brion/liboggz,brion/liboggz,kfish/liboggz,kfish/liboggz,brion/liboggz