libvpx: Pull from upstream

source/libvpx/vp9/common/vp9_entropymode.c

Index: source/libvpx/vp9/common/vp9_entropymode.c
diff --git a/source/libvpx/vp9/common/vp9_entropymode.c b/source/libvpx/vp9/common/vp9_entropymode.c
index 47e5164d721b7c7a1e4436ec7994cb27451d7916..7ba078b2b52457e1fc4e2615d7c171291a7e2845 100644
--- a/source/libvpx/vp9/common/vp9_entropymode.c
+++ b/source/libvpx/vp9/common/vp9_entropymode.c
@@ -428,9 +428,13 @@ void vp9_setup_past_independence(VP9_COMMON *cm) {
   int i;
   vp9_clearall_segfeatures(&cm->seg);
   cm->seg.abs_delta = SEGMENT_DELTADATA;
-  if (cm->last_frame_seg_map)
+
+  if (cm->last_frame_seg_map && !cm->frame_parallel_decode)
     vpx_memset(cm->last_frame_seg_map, 0, (cm->mi_rows * cm->mi_cols));
 
+  if (cm->current_frame_seg_map)
+    vpx_memset(cm->current_frame_seg_map, 0, (cm->mi_rows * cm->mi_cols));
+
   // Reset the mode ref deltas for loop filter
   vp9_zero(lf->last_ref_deltas);
   vp9_zero(lf->last_mode_deltas);
@@ -455,7 +459,7 @@ void vp9_setup_past_independence(VP9_COMMON *cm) {
   }
 
   // prev_mip will only be allocated in encoder.
-  if (frame_is_intra_only(cm) && cm->prev_mip)
+  if (frame_is_intra_only(cm) && cm->prev_mip && !cm->frame_parallel_decode)
     vpx_memset(cm->prev_mip, 0, cm->mi_stride * (cm->mi_rows + 1) *
                                     sizeof(*cm->prev_mip));