WebSocket Server refactor

The variable is used only once. The function can be used in the
condition. An error message is shown when the WebSocket Server
fails to listen.

Change-Id: Ia5b54d271ed72bc408d94d24eb275f7d83f290f1
Reviewed-by: Edward Welbourne <[email protected]>
Reviewed-by: Mårten Nordheim <[email protected]>
Reviewed-by: Michael Brasser <[email protected]>

Author: jsfdez

src/plugins/platforms/webgl/qwebglwebsocketserver.cpp

@@ -145,10 +145,13 @@ void QWebGLWebSocketServer::create()
 {
     Q_D(QWebGLWebSocketServer);
     d->server = new QWebSocketServer(QLatin1String("qtwebgl"), QWebSocketServer::NonSecureMode);
-    bool ok = d->server->listen(QHostAddress::Any);
-    if (ok)
-        connect(d->server, &QWebSocketServer::newConnection, this,
-                &QWebGLWebSocketServer::onNewConnection);
+    if (d->server->listen(QHostAddress::Any)) {
+        connect(d->server, &QWebSocketServer::newConnection,
+                this, &QWebGLWebSocketServer::onNewConnection);
+    } else {
+        qCCritical(lc, "The WebSocket Server cannot start: %s",
+                   qPrintable(d->server->errorString()));
+    }
 
     QMutexLocker lock(&QWebGLIntegrationPrivate::instance()->waitMutex);
     QWebGLIntegrationPrivate::instance()->waitCondition.wakeAll();