Decoder: Padded gau1_ih264d_top_left_mb_part_indx_mod to avoid an out of bound read

Change-Id: Ie8761de856ed8c7d08f3da61631c1bef446448e6
(cherry picked from commit b88f59d8353d65a75a3d250992f6b7fee1a61757)
diff --git a/decoder/ih264d_tables.c b/decoder/ih264d_tables.c
index d49de14..c45525a 100644
--- a/decoder/ih264d_tables.c
+++ b/decoder/ih264d_tables.c
@@ -855,7 +855,8 @@
     { 0, 0 /* Junk */, /* 16x16 */
       0, 8, /* 16x8 */
       0, 2, /* 8x16 */
-      0, 2, 8, 10 /* 8x8 */
+      0, 2, 8, 10 /* 8x8 */,
+      0 /* One extra entry is read at the end of loop, but not used */
     };
 
 /*!