bink: no need to increase width twice

Signed-off-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/bink.c

@@ -150,7 +150,7 @@ static void init_lengths(BinkContext *c, int width, int bw)
 
     c->bundle[BINK_SRC_BLOCK_TYPES].len = av_log2((width >> 3) + 511) + 1;
 
-    c->bundle[BINK_SRC_SUB_BLOCK_TYPES].len = av_log2(((width + 7) >> 4) + 511) + 1;
+    c->bundle[BINK_SRC_SUB_BLOCK_TYPES].len = av_log2((width >> 4) + 511) + 1;
 
     c->bundle[BINK_SRC_COLORS].len = av_log2(bw*64 + 511) + 1;