i40e: Fix NULL ptr dereference on VSI filter sync
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 v4.14.256 by commit 78f2a9e831f9610e3655a0be5e675e1aa2472089, it was introduced in version v3.12 by commit 41c445ff0f482bb6e6b72dcee9e598e20575f743. For more details please see the references link.