snow: check reference frame indices.
authorMichael Niedermayer <michaelni@gmx.at>
Fri, 2 Mar 2012 19:53:00 +0000 (20:53 +0100)
committerRonald S. Bultje <rsbultje@gmail.com>
Wed, 14 Mar 2012 20:24:35 +0000 (13:24 -0700)
commit1f8ff2b13cbfef790385818664ed12e763e7c75b
treee3ca9c1f2c13185ea161011e1dcbd8c4c050ccc7
parentc9837954e7b968d44f82e7cdb7618e9f523b196c
snow: check reference frame indices.

Fixes NULL ptr dereference

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
libavcodec/snowdec.c