Fix typo

[furunkel]

No description provided.

[schneems]

From eval.h I can confirm that rb_call_super only takes 2 arguments while rb_call_super_kw takes 3 and handles keywords:

/**
 * This resembles ruby's `super`.
 *
 * @param[in]  argc               Number of arguments.
 * @param[in]  argv               Arbitrary number of method arguments.
 * @exception  rb_eNoMethodError  No super method are there.
 * @exception  rb_eException      Any exceptions happen inside.
 * @return     What the super method evaluates to.
 */
VALUE rb_call_super(int argc, const VALUE *argv);

/**
 * Identical to rb_call_super(), except you can  specify how to handle the last
 * element of the given array.
 *
 * @param[in]  argc               Number of arguments.
 * @param[in]  argv               Arbitrary number of method arguments.
 * @param[in]  kw_splat           Handling of keyword parameters:
 *   - RB_NO_KEYWORDS           `argv`'s last is not a keyword argument.
 *   - RB_PASS_KEYWORDS         `argv`'s last is a keyword argument.
 *   - RB_PASS_CALLED_KEYWORDS  it depends if there is a passed block.
 * @exception  rb_eNoMethodError  No super method are there.
 * @exception  rb_eException      Any exceptions happen inside.
 * @return     What the super method evaluates to.
 */
VALUE rb_call_super_kw(int argc, const VALUE *argv, int kw_splat);

It was added here 2 years ago 9f24e8f.

I would say that certainly looks like a typo. Thanks for the fix (I don't have commit to merge, but it seems good to me).