net: hamradio: fix memory leak in mkiss_close
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 v5.12.13 by commit f4de2b43d13b7cf3ced9310e371b90c836dbd7cd, it was introduced in version v2.6.14 by commit 815f62bf742718458ba822a7e1f51f285eb997f2. For more details please see the references link.