[smooth] Fix stand-alone compilation.
* src/smooth/ftgrays.c (FT_Trace_Enable, FT_Trace_Disable)[STANDALONE_]:
Define.
diff --git a/src/smooth/ftgrays.c b/src/smooth/ftgrays.c
index 8235a94..d982c28 100644
--- a/src/smooth/ftgrays.c
+++ b/src/smooth/ftgrays.c
@@ -239,10 +239,13 @@
#define FT_ERROR( x ) do { } while ( 0 ) /* nothing */
#define FT_THROW( e ) FT_ERR_CAT( Smooth_Err_, e )
-
#endif /* !FT_DEBUG_LEVEL_TRACE */
+#define FT_Trace_Enable() do { } while ( 0 ) /* nothing */
+#define FT_Trace_Disable() do { } while ( 0 ) /* nothing */
+
+
#define FT_DEFINE_OUTLINE_FUNCS( class_, \
move_to_, line_to_, \
conic_to_, cubic_to_, \
