Fix SIONlib test in releases/2.4
Could you please cherry-pick a957e956 to the release branch? Without this patch, I can't build the virtual machine (based on Fedora 23) for our Dune course next week...
Could you please cherry-pick a957e956 to the release branch? Without this patch, I can't build the virtual machine (based on Fedora 23) for our Dune course next week...