Remove the need to clone parts

Instead of using `response.body()` we can basically inline it so that
response isn't consumed.

src/lib.rs

@@ -500,10 +500,9 @@ impl Client {
 
         let mut nonce = nonce;
         loop {
-            let response = self.inner_post(payload, nonce.clone(), signer, url).await?;
+            let mut response = self.inner_post(payload, nonce.clone(), signer, url).await?;
             if response.parts.status == StatusCode::BAD_REQUEST {
-                let parts = response.parts.clone();
-                let body = response.body().await.map_err(Error::Other)?;
+                let body = response.body.into_bytes().await.map_err(Error::Other)?;
                 let problem: Problem = serde_json::from_slice(&body)?;
                 if problem
                     .r#type
@@ -518,7 +517,7 @@ impl Client {
                 }
 
                 let response = BytesResponse {
-                    parts,
+                    parts: response.parts,
                     body: Box::new(StaticBody { bytes: body }),
                 };
                 return Ok(response);