CVE-2022-48855 sctp: fix kernel-infoleak for SCTP sockets

In the Linux kernel, the following vulnerability has been resolved: sctp: fix kernel-infoleak for SCTP sockets syzbot reported a kernel infoleak 1 of 4 bytes. After analysis, it turned out r-idiagexpires is not initialized if inetsctpdiagfill calls inetdiagmsgcommonfill Make sure to clear...