bpf: Fix slot type check in checkstackwritevaroff
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 249a6f58940de21fe9f0618b96cdbff437e121a8, it was introduced in version v5.12 by commit 01f810ace9ed37255f27608a0864abebccf0aab3. For more details please see the references link.