Account for OperationCanceledException

Author: LumpBloom7

osu.Game.Rulesets.Sentakki/IO/GameplayEventBroadcaster.cs

@@ -34,7 +34,14 @@ private async void attemptConnection()
             isWaitingForClient = true;
 
             try { await pipeServer.WaitForConnectionAsync(cancellationToken).ConfigureAwait(false); }
-            catch (TaskCanceledException) { return; }
+            catch (Exception e)
+            {
+                // The operation was canceled. Gracefully shutdown;
+                if (e is TaskCanceledException || e is OperationCanceledException)
+                    return;
+
+                throw;
+            }
 
             isWaitingForClient = false;