Handle TaskCanceledException in RunningSearch.Run

ILSpy/Search/SearchPane.cs

@@ -293,6 +293,7 @@ namespace ICSharpCode.ILSpy
 			
 			public async Task Run()
 			{
+				try {
 					await Task.Factory.StartNew(() => {
 						var searcher = GetSearchStrategy();
 						try {
@@ -307,6 +308,9 @@ namespace ICSharpCode.ILSpy
 						}
 
 					}, cts.Token, TaskCreationOptions.LongRunning, TaskScheduler.Current).ConfigureAwait(false);
+				} catch (TaskCanceledException) {
+					// ignore cancellation
+				}
 			}
 
 			AbstractSearchStrategy GetSearchStrategy()