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

Fixes CID732250 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
13 years ago · c2340831b8
parent 24778c32d8
commit c2340831b8
1 changed files with 1 additions and 1 deletions
--- a/libavcodec/aacsbr.c
+++ b/libavcodec/aacsbr.c
@ -555,7 +555,7 @@ 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;