MFH: r396532 r396599

Fix oggenc buffer overflow, crash on raw file close, channel integer
overflow, and division by zero.

PR: 202941
Submitted by: junovitch
Obtained from: https://trac.xiph.org/ticket/2212
Obtained from: https://trac.xiph.org/changeset/19117
Obtained from: Fedora vorbis-tools Git (commit 63a1a62d)
Security: CVE-2015-6749
Security: CVE-2014-9638
Security: CVE-2014-9639
Security: a35f415d-572a-11e5-b0a4-f8b156b6dcc8
Approved by: ports-secteam