Update src/shims/unix/linux/epoll.rs

Co-authored-by: Oli Scherer <github35764891676564198441@oli-obk.de>

Author: tiif

src/shims/unix/linux/epoll.rs

@@ -472,7 +472,6 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> {
             if timeout == 0 {
                 // Non-blocking with no notification returned.
                 this.write_scalar(Scalar::from_i32(0), &dest)?;
-                return Ok(());
             } else {
                 // Blocking
                 let duration = Duration::from_millis(timeout.into());