rose: Fix NULL pointer dereference in rosesendframe()
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 v5.15.78 by commit 3e2129c67daca21043a26575108f6286c85e71f6, it was introduced in version v5.15.64 by commit 9cf85759e104d7e9c3fd8920a554195b715d6797. For more details please see the references link.