Avoid casting from ASCII

kmplot/coordsconfigdialog.cpp

@@ -51,7 +51,7 @@ CoordsConfigDialog::CoordsConfigDialog(QWidget *parent)
 	configAxesDialog->layout()->setContentsMargins( 0, 0, 0, 0 );
 	addPage(configAxesDialog , i18n( "Coordinates" ), "coords", i18n( "Coordinate System" ) );
 	setWindowTitle( i18n( "Coordinate System" ) );
-	setHelp("axes-config");
+	setHelp(QString::fromLatin1("axes-config"));
 	setFaceType( Plain );
 	connect( configAxesDialog->kcfg_XMin, &EquationEdit::textEdited, this, &CoordsConfigDialog::updateButtons );
 	connect( configAxesDialog->kcfg_XMax, &EquationEdit::textEdited, this, &CoordsConfigDialog::updateButtons );

kmplot/maindlg.cpp

@@ -186,7 +186,7 @@ MainDlg::MainDlg(QWidget *parentWidget, QObject *parent, const QVariantList& ) :
 	// Let's create a Configure Dialog
 	m_settingsDialog = new KConfigDialog( parentWidget, "settings", Settings::self() );
 
-	QMetaObject::invokeMethod(m_settingsDialog, "setHelp", Qt::DirectConnection, Q_ARG(QString, "configuration"), Q_ARG(QString, "kmplot"));
+	QMetaObject::invokeMethod(m_settingsDialog, "setHelp", Qt::DirectConnection, Q_ARG(QString, QString::fromLatin1("configuration")), Q_ARG(QString, QString::fromLatin1("kmplot")));
 
 	// create and add the page(s)
 	m_generalSettings = new SettingsPageGeneral( View::self() );