From 219cb29c5d230ecc6ee154b447fabd7b59fbe089 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Wed, 28 Sep 2016 17:16:06 +0200
Subject: [PATCH] Fix build after rebasing opentype-gx branch on top of MATH
 table

---
 src/hb-ot-layout-common-private.hh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/hb-ot-layout-common-private.hh b/src/hb-ot-layout-common-private.hh
index 971c95a0a..4c7714a8e 100644
--- a/src/hb-ot-layout-common-private.hh
+++ b/src/hb-ot-layout-common-private.hh
@@ -1650,7 +1650,7 @@ struct DeviceHeader
 
 struct Device
 {
-  inline hb_position_t get_x_delta (hb_font_t *font, const VariationStore &store) const
+  inline hb_position_t get_x_delta (hb_font_t *font, const VariationStore &store=Null(VariationStore)) const
   {
     switch (u.b.format)
     {
@@ -1662,7 +1662,7 @@ struct Device
       return 0;
     }
   }
-  inline hb_position_t get_y_delta (hb_font_t *font, const VariationStore &store) const
+  inline hb_position_t get_y_delta (hb_font_t *font, const VariationStore &store=Null(VariationStore)) const
   {
     switch (u.b.format)
     {