[python3] atest: keywords/trace_log_return_value: Little workaround.
[python3] atest: keywords/trace_log_return_value: Little workaround.

--HG--
extra : transplant_source : %90%D9%C3b%93%AFJ%8C%22%CA%D8%82%C9%A9%7D%23%A4%B9M%FC

userzimmermann/robotframework,userzimmermann/robotframework,userzimmermann/robotframework,userzimmermann/robotframework,userzimmermann/robotframework