Letrecs now working properly, no use before definitions

scmvm/language/scheme.scm

@@ -227,12 +227,10 @@
                  `(set-then! ,var ,$expr ,(k undefined-value))))]
     [(f e* ...)
      (let* ([$rv (gensym "$rv-")]
-	    [cont `(lambda (,$rv) ,(k $rv))])
-       (T-k f
-            (lambda ($f)
-	      (T*-k e*
-                    (lambda ($e*)
-		      `(,$f ,@$e* ,cont))))))]))
+            [$k  (gensym "$k-")])
+       (T-k f (lambda ($f)
+	        (T*-k e* (lambda ($e*)
+                           (k `((lambda (,$k) (,$f ,@$e* ,$k)) (lambda (,$rv) ,$rv))))))))]))
 
 ;; (expr* * (aexp* -> cexp) -> cexp)
 (define (T*-k v* k)