Check red on main: rs/moq-relay/src/uring.rs missed by #3828 driver run() signature change

[kixelated]

Symptom

just check --all (CI Check job) fails to compile moq-relay:

error[E0308]: mismatched types
 --> rs/moq-relay/src/uring.rs:761:10
  |
761 |         if let Err(err) = driver_handle.run(driver).await {
  |                ^^^^^^^^   ------------------------------- this expression has type `moq_net::Error`
  |                |
  |                expected `Error`, found `Result<_, _>`

Root cause

#3828 changed the driver run() return from D::Output (a Result) to moq_net::Error directly, and updated the call sites (e.g. rs/moq-relay/src/websocket.rs gained an ended() helper mapping Closed -> Ok). rs/moq-relay/src/uring.rs:761 was missed and still patterns the result with if let Err(err).

Blame: uring.rs last touched by #3825; the signature change landed in #3828 (d2f881bbb).

Suggested fix

Mirror the websocket.rs ended() pattern at the uring.rs:761 spawn: treat the returned moq_net::Error as a value, log non-Closed terminations, keep the clean-close silent as before.

Evidence it is mainline

Found while landing #3823, whose diff contains zero .rs source files (just/yml/md only), so it cannot have caused this. The failing file at the PR head is byte-identical to origin/main.

Impact

Blocks every PR: Check is a required status check for main. #3823 (Smoke/Test/WASM/review green) is parked on this.

(Written by Muse Spark)