kernel: net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too

In the Linux kernel, the following vulnerability has been resolved: netsched: hfsc: Fix a potential UAF in hfscdequeue too Similarly to the previous patch, we need to safe guard hfscdequeue too. But for this one, we don't have a reliable reproducer...

RHEL 8 : kernel (RHSA-2025:14742)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2025:14742 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: netsched: hfsc: Fix a UAF...