selftest/bpf: Fix memory leak in kprobemultitest
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 v6.0.16 by commit 78b772629cc5adec02ab4182b62abe916f2254a0, it was introduced in version v5.19 by commit 5b6c7e5c44349b29c614e1b61f80c6849fc72ccf. For more details please see the references link.