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aacsbr: change order of operation to prevent out of array read

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Fixes CID732250
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit c2340831b8)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer
2012-10-13 00:10:23 +02:00
parent f2d56c2eeb
commit 8b64036038
1 changed files with 1 additions and 1 deletions
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libavcodec/aacsbr.c
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@@ -542,7 +542,7 @@ static int sbr_hf_calc_npatches(AACContext *ac, SpectralBandReplication *sbr)
k = sbr->n_master;
} while (sb != sbr->kx[1] + sbr->m[1]);
if (sbr->patch_num_subbands[sbr->num_patches-1] < 3 && sbr->num_patches > 1)
if (sbr->num_patches > 1 && sbr->patch_num_subbands[sbr->num_patches-1] < 3)
sbr->num_patches--;
return 0;