GitHub.App RepositoryCloneService: Move log error.

- Delete directory may throw errors, so log.Error should be called first.

Author: YuPeiHenry

src/GitHub.App/Services/RepositoryCloneService.cs

@@ -223,8 +223,8 @@ public async Task CloneRepository(
             }
             catch (Exception ex)
             {
-                operatingSystem.Directory.DeleteDirectory(repositoryPath);
                 log.Error(ex, "Could not clone {CloneUrl} to {Path}", cloneUrl, repositoryPath);
+                operatingSystem.Directory.DeleteDirectory(repositoryPath);
                 throw;
             }
         }