Move things

src/hb-ot-shape.hh

diff --git a/src/hb-ot-shape.hh b/src/hb-ot-shape.hh
index 52e6b11..88c72dc 100644
--- a/src/hb-ot-shape.hh
+++ b/src/hb-ot-shape.hh
@@ -42,9 +42,12 @@
   const void *data;
   hb_mask_t rtlm_mask, frac_mask, numr_mask, dnom_mask;
   hb_mask_t kern_mask;
+
   bool has_frac : 1;
   bool kerning_requested : 1;
   bool has_gpos_mark : 1;
+  bool fallback_positioning : 1;
+  bool fallback_glyph_classes : 1;
 
   inline void collect_lookups (hb_tag_t table_tag, hb_set_t *lookups) const
   {