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avcodec/wmalosslessdec: Fix return code for invalid buffer sizes
Fixes infinite loop Fixes Ticket2979 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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@ -1178,8 +1178,10 @@ static int decode_packet(AVCodecContext *avctx, void *data, int *got_frame_ptr,
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s->packet_done = 0;
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/* sanity check for the buffer length */
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if (buf_size < avctx->block_align)
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return 0;
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if (buf_size < avctx->block_align) {
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av_log(avctx, AV_LOG_ERROR, "buf size %d invalid\n", buf_size);
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return AVERROR_INVALIDDATA;
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}
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s->next_packet_start = buf_size - avctx->block_align;
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buf_size = avctx->block_align;
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