./net/netfilter/nft_set_rbtree.c:627:26: warning: variable ‘nft_net’ set but not used In the following kernel version: name: linux-next url:https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git branch: next-20231031 commit: 9c2d379d63450ae464eeab45462e0cb573cd97d0