use resources util to join path

src/vs/platform/extensionManagement/node/extensionGalleryService.ts

@@ -3,7 +3,6 @@
  *  Licensed under the MIT License. See License.txt in the project root for license information.
  *--------------------------------------------------------------------------------------------*/
 
-import * as path from 'vs/base/common/path';
 import { getErrorMessage, isPromiseCanceledError, canceled } from 'vs/base/common/errors';
 import { StatisticType, IGalleryExtension, IExtensionGalleryService, IGalleryExtensionAsset, IQueryOptions, SortBy, SortOrder, IExtensionIdentifier, IReportedExtension, InstallOperation, ITranslation, IGalleryExtensionVersion, IGalleryExtensionAssets, isIExtensionIdentifier } from 'vs/platform/extensionManagement/common/extensionManagement';
 import { getGalleryExtensionId, getGalleryExtensionTelemetryData, adoptToGalleryExtensionId } from 'vs/platform/extensionManagement/common/extensionManagementUtil';
@@ -775,7 +774,7 @@ export class ExtensionGalleryService implements IExtensionGalleryService {
 }
 
 export async function resolveMarketplaceHeaders(version: string, environmentService: IEnvironmentService, fileService: IFileService): Promise<{ [key: string]: string; }> {
-	const marketplaceMachineIdFile = URI.file(path.join(environmentService.userDataPath, 'machineid'));
+	const marketplaceMachineIdFile = joinPath(URI.file(environmentService.userDataPath), 'machineid');
 
 	let uuid: string | null = null;