Fix GOOPS method compilation bug when no next-method exists

* module/oop/goops/compile.scm (compute-cmethod): Fix a bug
  that caused the method compiler to barf while compiling a
  method that calls (next-method), if there is no applicable
  next method.

diff --git a/module/oop/goops/compile.scm b/module/oop/goops/compile.scm
index db1a160..ace89b4 100644 (file)
--- a/module/oop/goops/compile.scm
+++ b/module/oop/goops/compile.scm
@@ -48,7 +48,7 @@
   (let ((make-procedure (slot-ref (car methods) 'make-procedure)))
     (if make-procedure
         (make-procedure
-         (if (null? methods)
+         (if (null? (cdr methods))
              (lambda args
                (no-next-method (method-generic-function (car methods)) args))
              (compute-cmethod (cdr methods) types)))