SCM - reset pinned repository if the pinned repository was removed (microsoft#262292)

Author: lszomoru

src/vs/workbench/contrib/scm/browser/scmViewService.ts

@@ -373,18 +373,24 @@ export class SCMViewService implements ISCMViewService {
 		}
 
 		let added: Iterable<ISCMRepository> = Iterable.empty();
-		const repositoryView = this._repositories.splice(repositoriesIndex, 1);
+		const removed = this._repositories.splice(repositoriesIndex, 1);
 
 		if (this._repositories.length > 0 && this.visibleRepositories.length === 0) {
 			this._repositories[0].selectionIndex = 0;
 			added = [this._repositories[0].repository];
 		}
 
-		this._onDidChangeRepositories.fire({ added, removed: repositoryView.map(r => r.repository) });
+		this._onDidChangeRepositories.fire({ added, removed: removed.map(r => r.repository) });
 
-		if (repositoryView.length === 1 && repositoryView[0].focused && this.visibleRepositories.length > 0) {
+		// Check if the focused repository was removed
+		if (removed.length === 1 && removed[0].focused && this.visibleRepositories.length > 0) {
 			this.focus(this.visibleRepositories[0]);
 		}
+
+		// Check if the pinned repository was removed
+		if (removed.length === 1 && removed[0].repository === this._activeRepositoryPinnedObs.get()) {
+			this._activeRepositoryPinnedObs.set(undefined, undefined);
+		}
 	}
 
 	isVisible(repository: ISCMRepository): boolean {