Function emscripten_async_wget2

pub unsafe extern "C" fn emscripten_async_wget2(
    url: *const c_char,
    file: *const c_char,
    requesttype: *const c_char,
    param: *const c_char,
    userdata: *mut c_void,
    onload: em_async_wget2_onload_func,
    onerror: em_async_wget2_onstatus_func,
    onprogress: em_async_wget2_onstatus_func,
) -> c_int