Define return_trace()

Not functional change (expected!).

src/hb-ot-maxp-table.hh

diff --git a/src/hb-ot-maxp-table.hh b/src/hb-ot-maxp-table.hh
index 0d9a0fa..27105af 100644
--- a/src/hb-ot-maxp-table.hh
+++ b/src/hb-ot-maxp-table.hh
@@ -51,8 +51,9 @@
   inline bool sanitize (hb_sanitize_context_t *c) const
   {
     TRACE_SANITIZE (this);
-    return TRACE_RETURN (c->check_struct (this) &&
-			 likely (version.major == 1 || (version.major == 0 && version.minor == 0x5000u)));
+    return_trace (c->check_struct (this) &&
+		  likely (version.major == 1 ||
+			  (version.major == 0 && version.minor == 0x5000u)));
   }
 
   /* We only implement version 0.5 as none of the extra fields in version 1.0 are useful. */