From 754cf440bf80ced36461a98a5d4607a700f44fd3 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Wed, 10 Oct 2018 10:04:05 -0400
Subject: [PATCH] Minor

---
 src/hb-ot-shape-fallback.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/hb-ot-shape-fallback.cc b/src/hb-ot-shape-fallback.cc
index 556c34089..62104b3a8 100644
--- a/src/hb-ot-shape-fallback.cc
+++ b/src/hb-ot-shape-fallback.cc
@@ -460,6 +460,8 @@ _hb_ot_shape_fallback_kern (const hb_ot_shape_plan_t *plan,
 			    hb_font_t *font,
 			    hb_buffer_t *buffer)
 {
+  if (!font->has_glyph_h_kerning_func () && !font->has_glyph_v_kerning_func ())
+    return;
   hb_ot_shape_fallback_kern_driver_t driver (font, buffer);
   hb_kern_machine_t<hb_ot_shape_fallback_kern_driver_t> machine (driver);
   machine.kern (font, buffer, plan->kern_mask);