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 v5.4.164 by commit 3e70e3a72d80b16094faccbe438cd53761c3503a, it was introduced in version v5.4 by commit 9ebeddef58c41bd700419cdcece24cf64ce32276. For more details please see the references link.