DeleteHtreeGroups  361 3rdparty/libwebp/dec/vp8l.c   DeleteHtreeGroups(htree_groups, num_htree_groups);
DeleteHtreeGroups  914 3rdparty/libwebp/dec/vp8l.c   DeleteHtreeGroups(hdr->htree_groups_, hdr->num_htree_groups_);