wifi: libertas: Fix possible refcount leak in ifusbprobe()
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 v4.19.256 by commit 4c8e2f9ce1428e44cb103035eeced7aeb6b80980, it was introduced in version v3.5 by commit ce84bb69f50e6f6cfeabc9b965365290f4184417. For more details please see the references link.