Refactor ext-inter to loop through all masked modes in rdopt

No change in performance

Change-Id: Ie105a7baf6a2c2258d3ef117e727957e4393f51b

av1/common/entropymode.c

diff --git a/av1/common/entropymode.c b/av1/common/entropymode.c
index faa9abf..d91d6b3 100644
--- a/av1/common/entropymode.c
+++ b/av1/common/entropymode.c
@@ -1910,10 +1910,9 @@
   }
 
   for (i = 0; i < BLOCK_SIZES; ++i) {
-    if (is_interinter_wedge_used(i))
-      aom_tree_merge_probs(
-          av1_compound_type_tree, pre_fc->compound_type_prob[i],
-          counts->compound_interinter[i], fc->compound_type_prob[i]);
+    aom_tree_merge_probs(av1_compound_type_tree, pre_fc->compound_type_prob[i],
+                         counts->compound_interinter[i],
+                         fc->compound_type_prob[i]);
   }
 #endif  // CONFIG_EXT_INTER