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 v5.10.163 by commit 72e8d9c731a78a30d7347fa8104ca0547a295e09, it was introduced in version v5.10.33 by commit f3c4b01689d392373301e6e60d1b02c5b4020afc. For more details please see the references link.