hamradio: improve the incomplete fix to avoid NPD
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 v4.19.223 by commit b68f41c6320b2b7fbb54a95f07a69f3dc7e56c59. For more details please see the references link.