Interrogate list_releases result more closely

src/api/release.rs

@@ -23,6 +23,7 @@ pub async fn list_releases(
     let request_url = format!("{gitea_url}/api/v1/repos/{repo}/releases/");
     let req = client.get(request_url).send().await;
     let response = req.map_err(|reqwest_err| crate::Error::WrappedReqwestErr(reqwest_err))?;
+    if response.status().is_success() {
         let release_list = response
             .json::<Vec<Release>>()
             .await
@@ -32,6 +33,16 @@ pub async fn list_releases(
                 crate::Error::WrappedReqwestErr(reqwest_err)
             })?;
         return Ok(release_list);
+    } else if response.status().is_client_error() {
+        let mesg = response
+            .json::<ApiError>()
+            .await
+            .map_err(|reqwest_err| {
+                crate::Error::WrappedReqwestErr(reqwest_err)
+            })?;
+        return Err(crate::Error::ApiErrorMessage(mesg));
+    }
+    panic!("Reached end of list_releases without matching a return pathway.");
 }
 
 #[derive(Debug, Deserialize, Serialize)]