Fix bunch of unused parameter warnings
Show up with gcc -O0.
There's a few more but those are functions that need to be filled in.
Maybe this is a lost battle...
diff --git a/src/gen-vowel-constraints.py b/src/gen-vowel-constraints.py
index 02a338f..c4e75aa 100755
--- a/src/gen-vowel-constraints.py
+++ b/src/gen-vowel-constraints.py
@@ -176,9 +176,9 @@
print ()
print ('void')
-print ('_hb_preprocess_text_vowel_constraints (const hb_ot_shape_plan_t *plan,')
+print ('_hb_preprocess_text_vowel_constraints (const hb_ot_shape_plan_t *plan HB_UNUSED,')
print ('\t\t\t\t hb_buffer_t *buffer,')
-print ('\t\t\t\t hb_font_t *font)')
+print ('\t\t\t\t hb_font_t *font HB_UNUSED)')
print ('{')
print (' /* UGLY UGLY UGLY business of adding dotted-circle in the middle of')
print (' * vowel-sequences that look like another vowel. Data for each script')
