Fix memory usage meter for Linux

Change-Id: I761a8964f5ede89bb0db601fa2acf8d5f175f199
diff --git a/tests/utests/ofagent/test_converter.py b/tests/utests/ofagent/test_converter.py
index b4d0e85..fd72925 100644
--- a/tests/utests/ofagent/test_converter.py
+++ b/tests/utests/ofagent/test_converter.py
@@ -223,5 +223,6 @@
         for group_stat in group_stats:
             loxi_group_desc = to_loxi(group_stat.desc)
 
+
 if __name__ == '__main__':
     main()