vorbisdec: Fix decoding bug with channel handling

Fixes Bug: #191
Chromium Bug: #101458
CVE-2011-3895

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
(cherry picked from commit e6d527ff729e42d80e4756cab779ff4ad693631b)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
(cherry picked from commit 97f23c72a3815739ab28e297ce60f943349f6939)

Conflicts:

	libavcodec/vorbis_dec.c
(cherry picked from commit 42f0a6696889ba275aa2087b57fa99f7a97033a0)

Conflicts:

	libavcodec/vorbis_dec.c
1 file changed