Fix copy-paste errors in using uploader code in task (#165)

Fix copy-paste errors between uploader & download task

Author: directhex

src/Microsoft.SourceIndexer.Tasks/DownloadStage1Index.cs

@@ -86,7 +86,7 @@ private void ExecuteCore()
                         LoggedQueryParameters = { "api-version" },
                         IsAccountIdentifierLoggingEnabled = true
                     },
-                    ManagedIdentityClientId = clientId };
+                    ManagedIdentityClientId = ClientId };
                 Log.LogMessage($"Trying to use managed identity with client id: {ClientId}");
             }
 
@@ -97,13 +97,15 @@ private void ExecuteCore()
                 credential);
 
             var containerClient = blobServiceClient.GetBlobContainerClient(BlobContainer);
+            Pageable<BlobItem> blobs;
             try
             {
-                Pageable<BlobItem> blobs = containerClient.GetBlobs(prefix: RepoName + "/");
+                blobs = containerClient.GetBlobs(prefix: RepoName + "/");
             }
             catch (AuthenticationFailedException e)
             {
-                Fatal($"*** BLOB ENUMERATION FAILED: {e.Message}");
+                Log.LogError($"*** BLOB ENUMERATION FAILED: {e.Message}");
+                return;
             }
             BlobItem newest = blobs.OrderByDescending(b => b.Name).FirstOrDefault();
             if (newest == null)
@@ -118,14 +120,15 @@ private void ExecuteCore()
             try 
             {
                 using Stream fileStream = blobClient.OpenRead();
+                using var input = new GZipInputStream(fileStream);
+                using var archive = TarArchive.CreateInputTarArchive(input, Encoding.UTF8);
+                archive.ExtractContents(OutputDirectory, true); // would like this to be false, but SharpZipLib has a bug in 1.3.3
             }
             catch (AuthenticationFailedException e)
             {
-                Fatal($"*** STREAM READ FAILED: {e.Message}");
+                Log.LogError($"*** STREAM READ FAILED: {e.Message}");
+                return;
             }
-            using var input = new GZipInputStream(fileStream);
-            using var archive = TarArchive.CreateInputTarArchive(input, Encoding.UTF8);
-            archive.ExtractContents(OutputDirectory, true); // would like this to be false, but SharpZipLib has a bug in 1.3.3
         }
     }
 }