misc fixes: Remove a wasted value.

Remove delta index 254 from probability remapping and subexp coding.
Saves 1-bit when the delta index is 129.

Change-Id: I88aba565fc766b1769165be458d2efd3ce45817e

vp10/decoder/dsubexp.c

@@ -23,13 +23,13 @@ static int inv_recenter_nonneg(int v, int m) {
 
 static int decode_uniform(vpx_reader *r) {
   const int l = 8;
-  const int m = (1 << l) - 191;
+  const int m = (1 << l) - 191 + CONFIG_MISC_FIXES;
   const int v = vpx_read_literal(r, l - 1);
   return v < m ?  v : (v << 1) - m + vpx_read_bit(r);
 }
 
 static int inv_remap_prob(int v, int m) {
-  static uint8_t inv_map_table[MAX_PROB] = {
+  static uint8_t inv_map_table[MAX_PROB - CONFIG_MISC_FIXES] = {
       7,  20,  33,  46,  59,  72,  85,  98, 111, 124, 137, 150, 163, 176, 189,
     202, 215, 228, 241, 254,   1,   2,   3,   4,   5,   6,   8,   9,  10,  11,
      12,  13,  14,  15,  16,  17,  18,  19,  21,  22,  23,  24,  25,  26,  27,
@@ -46,7 +46,10 @@ static int inv_remap_prob(int v, int m) {
     191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 203, 204, 205, 206,
     207, 208, 209, 210, 211, 212, 213, 214, 216, 217, 218, 219, 220, 221, 222,
     223, 224, 225, 226, 227, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238,
-    239, 240, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 253
+    239, 240, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253,
+#if !CONFIG_MISC_FIXES
+    253
+#endif
   };
   assert(v < (int)(sizeof(inv_map_table) / sizeof(inv_map_table[0])));
   v = inv_map_table[v];

vp10/encoder/subexp.c

@@ -25,7 +25,8 @@ static const uint8_t update_bits[255] = {
   10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
   10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
   10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
-  10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
+  10, 11 - CONFIG_MISC_FIXES,
+          11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
   11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
   11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
   11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
@@ -85,7 +86,7 @@ static int prob_diff_update_cost(vpx_prob newp, vpx_prob oldp) {
 
 static void encode_uniform(vpx_writer *w, int v) {
   const int l = 8;
-  const int m = (1 << l) - 191;
+  const int m = (1 << l) - 191 + CONFIG_MISC_FIXES;
   if (v < m) {
     vpx_write_literal(w, v, l - 1);
   } else {