null checks: label service

#60565

src/tsconfig.strictNullChecks.json

@@ -353,6 +353,7 @@
 		"./vs/nls.d.ts",
 		"./vs/nls.mock.ts",
 		"./vs/platform/actions/common/actions.ts",
+		"./vs/platform/label/common/label.ts",
 		"./vs/platform/backup/common/backup.ts",
 		"./vs/platform/broadcast/electron-browser/broadcastService.ts",
 		"./vs/platform/clipboard/common/clipboardService.ts",
@@ -525,4 +526,4 @@
 	"exclude": [
 		"./typings/require-monaco.d.ts"
 	]
-}
+}