Function gio_sys::g_subprocess_communicate_finish

pub unsafe extern fn g_subprocess_communicate_finish(subprocess: *mut GSubprocess,
                                                     result: *mut GAsyncResult,
                                                     stdout_buf: *mut *mut GBytes,
                                                     stderr_buf: *mut *mut GBytes,
                                                     error: *mut *mut GError)
                                                     -> gboolean