Send back result in OpenLink

Author: Jasmine

src/GitHub.VisualStudio/Menus/OpenLink.cs

@@ -36,7 +36,9 @@ public async void Activate([AllowNull]object data = null)
 
         public bool CanShow()
         {
-            return IsGitHubRepo().Wait(250);
+            Task<bool> githubRepoCheckTask = IsGitHubRepo();
+            githubRepoCheckTask.Wait(250);
+            return githubRepoCheckTask.Result;
         }
     }
 }