audit: fix possible null-pointer dereference in auditfilterrules
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.15 by commit 6e3ee990c90494561921c756481d0e2125d8b895, it was introduced in version v5.3 by commit bf361231c295d92a28ca283ea713f56e93e55796. For more details please see the references link.