rxrpc: Fix rxrpclocal leak in rxrpclookup_peer()
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 v5.15.7 by commit 9469273e616ca8f1b6e3773c5019f21b4c8d828c, it was introduced in version v5.4 by commit 9ebeddef58c41bd700419cdcece24cf64ce32276. For more details please see the references link.