ALSA: usx2y: Don't call freepagesexact() with NULL address
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 v5.4.134 by commit 88262229b778f4f7a896da828d966f94dcb35d19. For more details please see the references link.