lua: scoreboard iter — return; trailing-semi, collectgarbage/setfenv/getfenv/T stubs; all runnable tests reach execution

lib/lua/parser.sx

@@ -733,6 +733,7 @@
                       (check-tok? "eof" nil)
                       (at-op? ";")))
                   (set! exps (parse-explist)))
+                (when (at-op? ";") (advance-tok!))
                 (list (quote lua-return) exps))))))
       (define
         parse-assign-or-call