tty: ngsm: initialize more members at gsmalloc_mux()
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 v5.19.8 by commit 55f799f2c34a4f0731ce58466b1a84aef24b06bc, it was introduced in version v5.19.2 by commit 5320aa45f526ddd3374e6226842467b788894b34. For more details please see the references link.