Avoid enum trailing commas

Based on patch from Jonathan Kew.

src/hb-ot-shape-complex-indic.cc

@@ -61,7 +61,7 @@ enum indic_position_t {
   POS_BASE,
   POS_ABOVE,
   POS_BELOW,
-  POS_POST,
+  POS_POST
 };
 
 /* Categories used in IndicSyllabicCategory.txt from UCD */
@@ -321,7 +321,7 @@ enum {
   HALF,
   _VATU,
   PSTF,
-  CJCT,
+  CJCT
 };
 
 static const hb_tag_t indic_other_features[] =

src/hb-ot-shape-complex-private.hh

@@ -55,6 +55,8 @@
 enum hb_ot_complex_shaper_t {
 #define HB_COMPLEX_SHAPER_IMPLEMENT(name) hb_ot_complex_shaper_##name,
   HB_COMPLEX_SHAPERS_IMPLEMENT_SHAPERS
+  /* Just here to avoid enum trailing comma: */
+  hb_ot_complex_shaper_generic = hb_ot_complex_shaper_default
 #undef HB_COMPLEX_SHAPER_IMPLEMENT
 };