fix lints revealed by tracing change

<https://github.com/tokio-rs/tracing/pull/3108> changes #[instrument] so
that several lints that were previously hidden on instrumented functions
are now visible.

src/api/server_server.rs

@@ -147,6 +147,7 @@ pub(crate) enum AllowLoopbackRequests {
     No,
 }
 
+#[allow(clippy::too_many_lines)]
 #[tracing::instrument(skip(request, log_error, allow_loopback), fields(url))]
 pub(crate) async fn send_request<T>(
     destination: &ServerName,
@@ -1883,7 +1884,7 @@ pub(crate) async fn create_invite_route(
         services().rooms.state_cache.update_membership(
             &body.room_id,
             &invited_user,
-            MembershipState::Invite,
+            &MembershipState::Invite,
             &sender,
             Some(invite_state),
             true,