sysutils/bareos-server: fix build on 32 bit platforms
All errors were just printf format errors in log messages.
Please consider removing -Werror so no more time has to be wasted on
patching these.
Approved by: portmgr (build fix blanket)
MFH: 2026Q2
(cherry picked from commit 9fdb260c7c19d69f1ed7c25922e1f513323e9d00)