use the new specifier b instead of o

1 files changed, 1 insertions, 4 deletions

diff --git a/src/kernel.c b/src/kernel.c
index 5e8a2f5aa..de4e474b3 100644
--- a/src/kernel.c
+++ b/src/kernel.c
@@ -728,10 +728,7 @@ class_instance_method_list(mrb_state *mrb, int argc, mrb_value *argv, struct RCl
       recur = TRUE;
   }
   else {
-      mrb_value r;
-
-      mrb_get_args(mrb, "o", &r);
-      recur = mrb_test(r);
+      mrb_get_args(mrb, "b", &recur);
   }
   ary = mrb_ary_new(mrb);
   oldklass = 0;