opt_ref_mv: Fix build when disabled.

Change-Id: I33db29b271eba902af73931a1ae139489621fcfe
diff --git a/av1/encoder/encodeframe.c b/av1/encoder/encodeframe.c
index 245b65d..ee367a6 100644
--- a/av1/encoder/encodeframe.c
+++ b/av1/encoder/encodeframe.c
@@ -1287,7 +1287,7 @@
       } else {
         mode_ctx =
             av1_mode_context_analyzer(mbmi_ext->mode_context, mbmi->ref_frame);
-        update_inter_mode_stats(counts, mode, mode_ctx);
+        update_inter_mode_stats(fc, counts, mode, mode_ctx, allow_update_cdf);
       }
 #endif