Fix reference frame mvs access

Resolve an enc/dec mismatch issue when tmv is off and mfmv is on.

Change-Id: Ia64005acd85f51d3162baafab1540095ad06187d

av1/common/mvref_common.c

diff --git a/av1/common/mvref_common.c b/av1/common/mvref_common.c
index 1cdefb5..e5faaab 100644
--- a/av1/common/mvref_common.c
+++ b/av1/common/mvref_common.c
@@ -962,7 +962,7 @@
   int different_ref_found = 0;
   int context_counter = 0;
 
-#if CONFIG_TMV
+#if CONFIG_TMV || CONFIG_MFMV
   int tmi_row = mi_row & 0xfffe;
   int tmi_col = mi_col & 0xfffe;
   POSITION mi_pos = { 0, 0 };