_prepare_dnu_arguments needs to be unroll safe
_prepare_dnu_arguments needs to be unroll safe

- otherwise, it is going to be excluded from traces

Signed-off-by: Stefan Marr <46f1a0bd5592a2f9244ca321b129902a06b53e03@stefan-marr.de>

smarr/RTruffleSOM,SOM-st/RTruffleSOM,smarr/RTruffleSOM,smarr/PySOM,SOM-st/PySOM,smarr/PySOM,SOM-st/RPySOM,SOM-st/RPySOM,SOM-st/PySOM,SOM-st/RTruffleSOM