Git gutter not shown in workspace with multiple folders (microsoft#176754) (microsoft#176952)

* Git gutter not shown in workspace with multiple folders
Fixes microsoft#176738

* Use UriIdentityService

Author: alexr00

src/vs/workbench/api/browser/mainThreadSCM.ts

@@ -286,7 +286,7 @@ class MainThreadSCMProvider implements ISCMProvider, QuickDiffProvider {
 	}
 
 	dispose(): void {
-
+		this._quickDiff?.dispose();
 	}
 }
 

src/vs/workbench/contrib/scm/common/quickDiffService.ts

@@ -10,6 +10,7 @@ import { isEqualOrParent } from 'vs/base/common/resources';
 import { score } from 'vs/editor/common/languageSelector';
 import { Emitter } from 'vs/base/common/event';
 import { withNullAsUndefined } from 'vs/base/common/types';
+import { IUriIdentityService } from 'vs/platform/uriIdentity/common/uriIdentity';
 
 function createProviderComparer(uri: URI): (a: QuickDiffProvider, b: QuickDiffProvider) => number {
 	return (a, b) => {
@@ -43,6 +44,10 @@ export class QuickDiffService extends Disposable implements IQuickDiffService {
 	private readonly _onDidChangeQuickDiffProviders = this._register(new Emitter<void>());
 	readonly onDidChangeQuickDiffProviders = this._onDidChangeQuickDiffProviders.event;
 
+	constructor(@IUriIdentityService private readonly uriIdentityService: IUriIdentityService) {
+		super();
+	}
+
 	addQuickDiffProvider(quickDiff: QuickDiffProvider): IDisposable {
 		this.quickDiffProviders.add(quickDiff);
 		this._onDidChangeQuickDiffProviders.fire();
@@ -60,7 +65,7 @@ export class QuickDiffService extends Disposable implements IQuickDiffService {
 
 	async getQuickDiffs(uri: URI, language: string = '', isSynchronized: boolean = false): Promise<QuickDiff[]> {
 		const providers = Array.from(this.quickDiffProviders)
-			.filter(provider => !provider.rootUri || isEqualOrParent(uri, provider.rootUri))
+			.filter(provider => !provider.rootUri || this.uriIdentityService.extUri.isEqualOrParent(uri, provider.rootUri))
 			.sort(createProviderComparer(uri));
 
 		const diffs = await Promise.all(providers.map(async provider => {