Fix argument specs to `Fiber`
@@ -409,7 +409,7 @@ mrb_mruby_fiber_gem_init(mrb_state* mrb)
c = mrb_define_class(mrb, "Fiber", mrb->object_class);
MRB_SET_INSTANCE_TT(c, MRB_TT_FIBER);
- mrb_define_method(mrb, c, "initialize", fiber_init, MRB_ARGS_NONE());
+ mrb_define_method(mrb, c, "initialize", fiber_init, MRB_ARGS_NONE()|MRB_ARGS_BLOCK());
mrb_define_method(mrb, c, "resume", fiber_resume, MRB_ARGS_ANY());
mrb_define_method(mrb, c, "transfer", fiber_transfer, MRB_ARGS_ANY());
mrb_define_method(mrb, c, "alive?", fiber_alive_p, MRB_ARGS_NONE());
