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avcodec/mm: don't fail if x offset exceeds frame width
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@ -161,7 +161,7 @@ static int mm_decode_inter(MmContext * s, int half_horiz, int half_vert)
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for(j=0; j<8; j++) {
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int replace = (replace_array >> (7-j)) & 1;
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if (x + half_horiz >= s->avctx->width)
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return AVERROR_INVALIDDATA;
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break;
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if (replace) {
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int color = bytestream2_get_byte(&data_ptr);
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s->frame->data[0][y*s->frame->linesize[0] + x] = color;
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