Fix syntax error in the selinux-luna %postun script
    
    It was missing a trailing fi.
    
    This bad syntax was preventing cleanup of the
    {free}ipa-selinux-luna SELinux module:
    
    Running scriptlet: freeipa-selinux-luna-4.12.0.dev202402211727+git0ee   34/44
    /var/tmp/rpm-tmp.qoCDFi: line 16: syntax error: unexpected end of file
    warning: %postun(freeipa-selinux-luna-4.12.0.dev202402211727+git0eeecdcec-0.fc37.noarch) scriptlet failed, exit status
    
    Fixes: https://pagure.io/freeipa/issue/9629
    
    Signed-off-by: Rob Crittenden <rcritten@redhat.com>
    Reviewed-By: Florence Blanc-Renaud <flo@redhat.com>