[ot-layout] Clear random flag for subsequent flags

Ouch!

src/hb-ot-layout.cc

@@ -1932,11 +1932,10 @@ inline void hb_ot_map_t::apply (const Proxy &proxy,
       c.set_lookup_mask (lookups[table_index][i].mask);
       c.set_auto_zwj (lookups[table_index][i].auto_zwj);
       c.set_auto_zwnj (lookups[table_index][i].auto_zwnj);
-      if (lookups[table_index][i].random)
+      c.set_random (lookups[table_index][i].random);
-      {
+      if (c.random)
-	c.set_random (true);
 	buffer->unsafe_to_break_all ();
-      }
+
       apply_string<Proxy> (&c,
 			   proxy.table.get_lookup (lookup_index),
 			   proxy.accels[lookup_index]);