Function libxslt::bindings::xmlRelaxNGGetValidErrors

pub unsafe extern "C" fn xmlRelaxNGGetValidErrors(
    ctxt: *mut _xmlRelaxNGValidCtxt, 
    err: *mut Option<unsafe extern "C" fn(*mut c_void, *const i8, ...)>, 
    warn: *mut Option<unsafe extern "C" fn(*mut c_void, *const i8, ...)>, 
    ctx: *mut *mut c_void
) -> i32