cancel stats task on any state other than UNLOCKED

main/commons/src/main/java/org/cryptomator/common/vaults/VaultStats.java

@@ -47,12 +47,10 @@ public class VaultStats {
 				LOG.debug("start recording stats");
 				updateService.restart();
 				break;
-			case LOCKED:
+			default:
 				LOG.debug("stop recording stats");
 				updateService.cancel();
 				break;
-			default:
-				break;
 		}
 	}