xxan: don't read before start of buffer in av_memcpy_backptr().
authorRonald S. Bultje <rsbultje@gmail.com>
Fri, 9 Mar 2012 00:32:46 +0000 (16:32 -0800)
committerReinhard Tartler <siretart@tauware.de>
Sun, 1 Apr 2012 16:33:29 +0000 (18:33 +0200)
commit5ae49ddaa447bb4fba287f92ca508caba399ffbd
treed5fe467c9930b87e2e2e71ab1bc742472922c6b7
parent311361348dc5af77ad189bba846f2fdaff85a5c4
xxan: don't read before start of buffer in av_memcpy_backptr().

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
(cherry picked from commit f1279e286b00e99f343adb51e251f036a3df6f32)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
libavcodec/xxan.c