QGCApplication: Remove empty string from QStringLiteral constructor

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

src/QGCApplication.cc

@@ -625,7 +625,7 @@ void QGCApplication::saveTelemetryLogOnMainThread(QString tempLogfile)
 
         int tryIndex = 1;
         QString saveFileName = nameFormat.arg(
-            QDateTime::currentDateTime().toString(dtFormat)).arg("").arg(toolbox()->settingsManager()->appSettings()->telemetryFileExtension);
+            QDateTime::currentDateTime().toString(dtFormat)).arg(QStringLiteral("")).arg(toolbox()->settingsManager()->appSettings()->telemetryFileExtension);
         while (saveDir.exists(saveFileName)) {
             saveFileName = nameFormat.arg(
                 QDateTime::currentDateTime().toString(dtFormat)).arg(QStringLiteral(".%1").arg(tryIndex++)).arg(toolbox()->settingsManager()->appSettings()->telemetryFileExtension);