perf bpf: Avoid memory leak from perfenvinsertbtf()
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 v5.4.162 by commit 642fc22210a5e59d40b1e4d56d21ec3effd401f2, it was introduced in version v5.1 by commit 3792cb2ff43b1b193136a03ce1336462a827d792. For more details please see the references link.