Fix compiler warnings

Change-Id: I887cdcf90b87736f2a3805420aa41eed93324bee

vp8/decoder/detokenize.c

@@ -295,6 +295,7 @@ static int vp8_decode_coefs(VP8D_COMP *dx, const MACROBLOCKD *xd,
   const vp8_prob *prob, *coef_probs;
 
   switch (block_type) {
+    default:
     case TX_4X4:
       coef_probs = fc->coef_probs[type][0][0];
       break;
@@ -302,7 +303,7 @@ static int vp8_decode_coefs(VP8D_COMP *dx, const MACROBLOCKD *xd,
       coef_probs = fc->coef_probs_8x8[type][0][0];
       break;
 #if CONFIG_TX16X16
-    default:
+    case TX_16X16:
       coef_probs = fc->coef_probs_16x16[type][0][0];
       break;
 #endif

vp8/encoder/rdopt.c

@@ -2943,7 +2943,7 @@ void vp8_rd_pick_inter_mode(VP8_COMP *cpi, MACROBLOCK *x, int recon_yoffset, int
   int uv_intra_rate_8x8 = 0, uv_intra_distortion_8x8 = 0, uv_intra_rate_tokenonly_8x8 = 0;
   int uv_intra_skippable_8x8 = 0;
   int rate_y, UNINITIALIZED_IS_SAFE(rate_uv);
-  int distortion_uv;
+  int distortion_uv = INT_MAX;
   int64_t best_yrd = INT64_MAX;
 #if CONFIG_PRED_FILTER
   int best_filter_state;