Don't bother trying to kill the child process on exit.

As the exit signal handler does not allow asynchronous tasks and
besides, killing the parent should kill its children too.

lib/www/server/index.js

@@ -23,10 +23,14 @@ async function main () {
 			INFO("Versions:", versions);
 
 
-		process.on('exit', () => eventManager.kill());
 			const eventManagerPath = [__dirname, "events"].join("/");
 			const eventManager = fork(eventManagerPath, /*{ stdio: 'ignore' }*/);
 
+			process.on('exit', async () => {
+				DEBUG("Exiting");
+				// eventManager.kill()
+				// periodicTasks.cleanup();
+			});
 		} catch (err) {
 			ERROR(err);
 			process.exit(2);