cac-aca: Avoid type casting causing test failures on s390
This patch was lying forgotten in my master for too long. If I remember well, the type cast from
int (on line 209) was causing issues on s390 architecture, when I was building RHEL7 package and this patch as it is is part of RHEL7 package. It was not problem with RHEL8 and newer as we no longer use this arch by default, but it is certainly a good idea to have it fixed.