Make `AcquireError` auto-implement `Clone`
@@ -396,7 +396,7 @@ pub enum Backbuffer<B: Backend> {
}
/// Error on acquiring the next image from a swapchain.
-#[derive(Debug)]
+#[derive(Debug, Clone)]
pub enum AcquireError {
/// No image was ready after the specified timeout expired.
NotReady,
