From d6d6d23900338d4919ccc3e0464b63bdd65d8b69 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tobias=20K=C3=A4s?= <tobias.kaes@gmail.com>
Date: Sat, 31 Jul 2021 12:52:37 +0200
Subject: [PATCH] Make use of fast HashSet.Contains check

---
 .../JoinableTaskDependencyGraph.cs                            | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Microsoft.VisualStudio.Threading/JoinableTaskDependencyGraph.cs b/src/Microsoft.VisualStudio.Threading/JoinableTaskDependencyGraph.cs
index 324467fd5..ab599852e 100644
--- a/src/Microsoft.VisualStudio.Threading/JoinableTaskDependencyGraph.cs
+++ b/src/Microsoft.VisualStudio.Threading/JoinableTaskDependencyGraph.cs
@@ -211,9 +211,9 @@ internal static HashSet<JoinableTask> GetDependentTasksFromCandidates(IEnumerabl
             while (queue.Count > 0)
             {
                 IJoinableTaskDependent startDepenentNode = queue.Dequeue();
-                if (candidates.Contains(startDepenentNode))
+                if (startDepenentNode is JoinableTask startTask && candidates.Contains(startTask))
                 {
-                    results.Add((JoinableTask)startDepenentNode);
+                    results.Add(startTask);
                 }
 
                 lock (startDepenentNode.JoinableTaskContext.SyncContextLock)