Function PEM_read_bio_ECPrivateKey

pub unsafe extern "C" fn PEM_read_bio_ECPrivateKey(
    out: *mut bio_st,
    x: *mut *mut ec_key_st,
    cb: Option<unsafe extern "C" fn(_: *mut i8, _: i32, _: i32, _: *mut c_void) -> i32>,
    u: *mut c_void,
) -> *mut ec_key_st