4xm: prevent NULL dereference with invalid huffman table
Signed-off-by: Janne Grunau <janne-libav@jannau.net>
(cherry picked from commit 1b1182ce97
)
Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:

committed by
Reinhard Tartler

parent
5ab326d7db
commit
6b011631e9
@@ -602,9 +602,10 @@ static const uint8_t *read_huffman_tables(FourXContext *f, const uint8_t * const
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len_tab[j]= len;
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}
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init_vlc(&f->pre_vlc, ACDC_VLC_BITS, 257,
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len_tab , 1, 1,
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bits_tab, 4, 4, 0);
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if (init_vlc(&f->pre_vlc, ACDC_VLC_BITS, 257,
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len_tab , 1, 1,
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bits_tab, 4, 4, 0))
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return NULL;
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return ptr;
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}
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