Function onig_sys::onig_get_callout_data_by_callout_args_self_dont_clear_old

pub unsafe extern "C" fn onig_get_callout_data_by_callout_args_self_dont_clear_old(
    args: *mut OnigCalloutArgs, 
    slot: c_int, 
    type_: *mut OnigType, 
    val: *mut OnigValue
) -> c_int