Fix a few other pedantic warnings
diff --git a/src/hb-ot-layout-gsub-private.hh b/src/hb-ot-layout-gsub-private.hh
index af27829..4c682fe 100644
--- a/src/hb-ot-layout-gsub-private.hh
+++ b/src/hb-ot-layout-gsub-private.hh
@@ -675,7 +675,7 @@
     Context		= 5,
     ChainContext	= 6,
     Extension		= 7,
-    ReverseChainSingle	= 8,
+    ReverseChainSingle	= 8
   };
 
   inline bool apply (APPLY_ARG_DEF, unsigned int lookup_type) const