Correct the predicted output vars of tab_batch.

app.py

@@ -134,8 +134,9 @@ def predict(images, resolution, weights_file):
         with zipfile.ZipFile(zip_file_path, 'w') as zipf:
             for file in save_paths:
                 zipf.write(file, os.path.basename(file))
-
-    return image, image_masked
+        return save_paths, zip_file_path
+    else:
+        return image, image_masked
 
 
 examples = [[_] for _ in glob('examples/*')][:]