oggz-comment: fix crash when writing output to stdout, eg. by running "oggz-comment file.ogv -a". Reported by j^
oggz-comment: fix crash when writing output to stdout, eg. by running
"oggz-comment file.ogv -a". Reported by j^


git-svn-id: ed696e516b63563c8842837a624e30c98be77b3c@3497 8158c8cd-e7e1-0310-9fa4-c5954c97daef

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