While in principle the pointer could overflow, GCC 12 considers this to
not be possible and issues the following warning:
../src/lxc/cgroups/cgfsng.c: In function ‘__cgfsng_delegate_controllers’:
../src/lxc/cgroups/cgfsng.c:3306:21: warning: the comparison will always evaluate as ‘true’ for the pointer operand in ‘it + 8’ must not be NULL [-Waddress]
3306 | if ((it + 1) && *(it + 1))
| ^
This removes the only build warning triggered when building on openSUSE.