Function onig_sys::onig_get_callout_data_by_tag_dont_clear_old

pub unsafe extern "C" fn onig_get_callout_data_by_tag_dont_clear_old(
    reg: *mut regex_t, 
    mp: *mut OnigMatchParam, 
    tag: *const OnigUChar, 
    tag_end: *const OnigUChar, 
    slot: c_int, 
    type_: *mut OnigType, 
    val: *mut OnigValue
) -> c_int