src/builtin.lisp: Delete unused variable binding.

diff --git a/src/builtin.lisp b/src/builtin.lisp
index 73de860..395d2cf 100644 (file)
--- a/src/builtin.lisp
+++ b/src/builtin.lisp
@@ -227,7 +227,6 @@ static const SodClass *const ~A__cpl[] = {
            class                       ;0
            (mapcar (lambda (chain)     ;1
                      (let* ((head (sod-class-chain-head (car chain)))
-                            (tail (sod-class-chain-head (car chain)))
                             (chain-nick (sod-class-nickname head)))
                        (list class chain-nick                        ;0 1
                              (reverse chain)                         ;2