fix a compile error when intrabc is enabled
on windows build

Change-Id: I841eb96b26155dd8fcba008884437035abc7e806

av1/decoder/decodemv.c

diff --git a/av1/decoder/decodemv.c b/av1/decoder/decodemv.c
index 3d72612..bee5aca 100644
--- a/av1/decoder/decodemv.c
+++ b/av1/decoder/decodemv.c
@@ -1132,7 +1132,7 @@
 #endif
 
       int16_t inter_mode_ctx[MODE_CTX_REF_FRAMES];
-      int_mv ref_mvs[MAX_MV_REF_CANDIDATES] = {};
+      int_mv ref_mvs[MAX_MV_REF_CANDIDATES];
 
       av1_find_mv_refs(cm, xd, mi, INTRA_FRAME, &xd->ref_mv_count[INTRA_FRAME],
                        xd->ref_mv_stack[INTRA_FRAME],