Unify the checking on compound mode prediction

Change-Id: Id9c025febf21aeb67cbc719f585661b715bdb9ce
diff --git a/av1/encoder/bitstream.c b/av1/encoder/bitstream.c
index b449fab..a615443 100644
--- a/av1/encoder/bitstream.c
+++ b/av1/encoder/bitstream.c
@@ -2201,8 +2201,7 @@
 #if CONFIG_EXT_INTER
     if (
 #if CONFIG_COMPOUND_SINGLEREF
-        (is_inter_compound_mode(mbmi->mode) ||
-         is_inter_singleref_comp_mode(mbmi->mode)) &&
+        is_inter_anyref_comp_mode(mbmi->mode) &&
 #else   // !CONFIG_COMPOUND_SINGLEREF
         cpi->common.reference_mode != SINGLE_REFERENCE &&
         is_inter_compound_mode(mbmi->mode) &&