PadMessageHandler: Stop the USER_CHANGES timer on exception

src/node/handler/PadMessageHandler.js

@@ -676,9 +676,9 @@ const handleUserChanges = async (socket, message) => {
     stats.meter('failedChangesets').mark();
     messageLogger.warn(`Failed to apply USER_CHANGES from author ${thisSession.author} ` +
                        `(socket ${socket.id}) on pad ${thisSession.padId}: ${err.stack || err}`);
-  }
-
+  } finally {
     stopWatch.end();
+  }
 };
 
 exports.updatePadClients = async (pad) => {