Fix a bug for ec-adapt in decode_coefs()

Use correct tranform size context.

BUG=aomedia:408

Change-Id: I4781a18b1f66c82a5f7aab54f11fbbd6772a9c79

av1/decoder/detokenize.c

@@ -86,15 +86,11 @@ static int decode_coefs(MACROBLOCKD *xd, PLANE_TYPE type, tran_low_t *dqcoeff,
   aom_prob(*coef_probs)[COEFF_CONTEXTS][UNCONSTRAINED_NODES] =
       ec_ctx->coef_probs[tx_size_ctx][type][ref];
   const aom_prob *prob;
-#if CONFIG_EC_ADAPT
-  aom_cdf_prob(*coef_cdfs)[COEFF_CONTEXTS][CDF_SIZE(ENTROPY_TOKENS)] =
-      ec_ctx->coef_cdfs[tx_size][type][ref];
-  aom_cdf_prob(*cdf)[CDF_SIZE(ENTROPY_TOKENS)];
-#elif CONFIG_EC_MULTISYMBOL
+#if CONFIG_EC_MULTISYMBOL
   aom_cdf_prob(*coef_cdfs)[COEFF_CONTEXTS][CDF_SIZE(ENTROPY_TOKENS)] =
       ec_ctx->coef_cdfs[tx_size_ctx][type][ref];
   aom_cdf_prob(*cdf)[CDF_SIZE(ENTROPY_TOKENS)];
-#endif  // CONFIG_EC_ADAPT
+#endif  // CONFIG_EC_MULTISYMBOL
 #endif  // CONFIG_NEW_TOKENSET
   unsigned int(*coef_counts)[COEFF_CONTEXTS][UNCONSTRAINED_NODES + 1] = NULL;
   unsigned int(*eob_branch_count)[COEFF_CONTEXTS] = NULL;