rename pred_mv_s8 to pred_mv

Change-Id: Ib1088c3fc80952074e098385fe5eb81742e7dc59
diff --git a/av1/encoder/bitstream.c b/av1/encoder/bitstream.c
index c104f35..7636151 100644
--- a/av1/encoder/bitstream.c
+++ b/av1/encoder/bitstream.c
@@ -1269,7 +1269,7 @@
 #endif
 #else
 #if CONFIG_REF_MV
-                            &mi->bmi[j].pred_mv_s8[ref].as_mv, is_compound,
+                            &mi->bmi[j].pred_mv[ref].as_mv, is_compound,
 #else
                             &mbmi_ext->ref_mvs[mbmi->ref_frame[ref]][0].as_mv,
 #endif  // CONFIG_REF_MV