bpftrace: fix CVE-2024-2313

[meenaligupta159]

If kernel headers need to be extracted, bpftrace will attempt to load them from a temporary directory. An unprivileged attacker could use this to force bcc to load compromised linux headers. Linux distributions which provide kernel headers by default are not affected by default.

[kraj]

Thanks @meenaligupta159, i see the PR is against master branch is that correct ? secondly, please squash both commits into one and for push to your branch