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vp6: Fix illegal read.

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(cherry picked from commit 2a6eb06254df79e96b3d791b6b89b2534ced3119)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Alex Converse 2011-11-03 15:55:52 -07:00 committed by Michael Niedermayer
parent b08001e00a
commit 93f1159af5
1 changed files with 3 additions and 1 deletions
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4
libavcodec/vp6.c
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@ -374,7 +374,7 @@ static void vp6_parse_coeff_huffman(VP56Context *s)
if (b > 3) pt = 1;
vlc_coeff = &s->dccv_vlc[pt];
for (coeff_idx=0; coeff_idx<64; ) {
for (coeff_idx = 0;;) {
int run = 1;
if (coeff_idx<2 && s->nb_null[coeff_idx][pt]) {
s->nb_null[coeff_idx][pt]--;
@ -411,6 +411,8 @@ static void vp6_parse_coeff_huffman(VP56Context *s)
}
}
coeff_idx+=run;
if (coeff_idx >= 64)
break;
cg = FFMIN(vp6_coeff_groups[coeff_idx], 3);
vlc_coeff = &s->ract_vlc[pt][ct][cg];
}