From 1e5442291c6bed576dd0048aab7e3ff1c50703cf Mon Sep 17 00:00:00 2001
From: SteVen Batten <stbatt@microsoft.com>
Date: Wed, 29 Jan 2020 12:01:24 -0800
Subject: [PATCH] don't update overrides if not provided

---
 src/vs/platform/list/browser/listService.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/vs/platform/list/browser/listService.ts b/src/vs/platform/list/browser/listService.ts
index d232b406559..10f3ec6150f 100644
--- a/src/vs/platform/list/browser/listService.ts
+++ b/src/vs/platform/list/browser/listService.ts
@@ -850,7 +850,10 @@ export class WorkbenchAsyncDataTree<TInput, T, TFilterData = void> extends Async
 
 	updateOptions(options: IWorkbenchAsyncDataTreeOptions<T, TFilterData> = {}): void {
 		super.updateOptions(options);
-		this.internals.updateStyleOverrides(options.overrideStyles);
+
+		if (options.overrideStyles) {
+			this.internals.updateStyleOverrides(options.overrideStyles);
+		}
 	}
 }
 
-- 
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