avcodec/utvideodec: Increase vlc len

Fixes a regression since fb3e3808 similar to ticket #2661,
reported by fluffrabbit at aol dot com.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/utvideodec.c

@@ -71,7 +71,7 @@ static int build_huff(const uint8_t *src, VLC *vlc, int *fsym)
         code += 0x80000000u >> (he[i].len - 1);
     }
 
-    return ff_init_vlc_sparse(vlc, FFMIN(he[last].len, 10), last + 1,
+    return ff_init_vlc_sparse(vlc, FFMIN(he[last].len, 11), last + 1,
                               bits,  sizeof(*bits),  sizeof(*bits),
                               codes, sizeof(*codes), sizeof(*codes),
                               syms,  sizeof(*syms),  sizeof(*syms), 0);