mdec.c: fix overread.

32ac63ee · Ronald S. Bultje · a26d2b4b · 32ac63ee
Commit 32ac63ee authored May 10, 2011 by Ronald S. Bultje
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mdec.c libavcodec/mdec.c +2 -1

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--- a/libavcodec/mdec.c
+++ b/libavcodec/mdec.c
@@ -125,7 +125,8 @@ static inline int decode_mb(MDECContext *a, DCTELEM block[6][64]){
    a->dsp.clear_blocks(block[0]);
    for(i=0; i<6; i++){
-        if( mdec_decode_block_intra(a, block[ block_index[i] ], block_index[i]) < 0)
+        if( mdec_decode_block_intra(a, block[ block_index[i] ], block_index[i]) < 0 ||
+            get_bits_left(&a->gb) < 0)
            return -1;
    }
    return 0;