log close() errors (for #37541)

src/vs/workbench/services/files/node/fileService.ts

@@ -372,7 +372,7 @@ export class FileService implements IFileService {
 						decoder.end();
 					}
 					if (fd) {
-						fs.close(fd, err => { });
+						fs.close(fd, err => this.options.errorLogger(err.toString()));
 					}
 				};