UVI-2021-1001694 libbpf: Fix memory leak in strset

libbpf: Fix memory leak in strset 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 v5.14.12 by commit 9e8e7504e09831c469b67d6dc11d9a72654bdb8c, i...