mruby/mruby — pull request #2260 by cubicdaiya (2014-05-16 10:51:21+00:00)
Title: fix SEGV for Object#respond_to?

This Pull-Request is related #2259.

## Before

```
$ bin/mirb
> respond_to?
segmentation fault bin/mirb
$
```

## After

```
$ bin/mirb
> respond_to?
(mirb):1: wrong number of arguments (ArgumentError)
>
```