fix broken unit test

common/lib/xmodule/xmodule/modulestore/xml_importer.py

@@ -302,6 +302,7 @@ def import_module(module, store, course_data_path, static_content_store, allow_n
             # Ignore any missing keys in _model_data
             pass
 
+    module_data = {}
     if 'data' in content:
         module_data = content['data']
 
@@ -324,8 +325,10 @@ def import_module(module, store, course_data_path, static_content_store, allow_n
                 for key in remap_dict.keys():
                     module_data = module_data.replace(key, remap_dict[key])
 
-        except Exception, e:
+        except Exception:
             logging.exception("failed to rewrite links on {0}. Continuing...".format(module.location))
+    else:
+        module_data = content
 
     if allow_not_found:
         store.update_item(module.location, module_data, allow_not_found=allow_not_found)