Minor

src/hb-ot-shape.cc

diff --git a/src/hb-ot-shape.cc b/src/hb-ot-shape.cc
index 2f28b56..a19763d 100644
--- a/src/hb-ot-shape.cc
+++ b/src/hb-ot-shape.cc
@@ -613,8 +613,6 @@
     hb_synthesize_glyph_classes (c);
 
   c->plan->substitute (c->font, buffer);
-
-  return;
 }
 
 static inline void