[nostalgia] Enable and fix -Wextra warnings

src/nostalgia/studio/lib/json_test.cpp

@@ -51,7 +51,7 @@ Error model(T *io, TestStruct *obj) {
 	return err;
 }
 
-int main(int argc, char **args) {
+int main() {
 	int err = 0;
 	QString json;
 	TestStruct ts = {

src/nostalgia/studio/lib/oxfstreeview.cpp

@@ -26,7 +26,7 @@ OxFSFile::OxFSFile(PassThroughFS *fs, QString path, OxFSFile *parentItem) {
 		auto stat = fs->stat(static_cast<const char*>(m_path.toUtf8()));
 		if (!stat.error) {
 			if (stat.value.fileType == FileType_Directory) {
-				fs->ls(m_path.toUtf8(), [&ls](const char *name, ox::InodeId_t inode) {
+				fs->ls(m_path.toUtf8(), [&ls](const char *name, ox::InodeId_t) {
 					ls.push_back(name);
 					return OxError(0);
 				});
@@ -115,7 +115,7 @@ QString OxFSFile::name() const {
 
 // OxFSModel
 
-OxFSModel::OxFSModel(PassThroughFS *fs, QObject *parent) {
+OxFSModel::OxFSModel(PassThroughFS *fs, QObject*) {
 	m_rootItem = new OxFSFile(fs, "");
 }
 
@@ -213,7 +213,7 @@ void OxFSModel::updateFile(QString path) {
 	m_rootItem->appendChild(this, pathItems, "");
 }
 
-void OxFSModel::setupModelData(const QStringList &lines, OxFSFile *parent) {
+void OxFSModel::setupModelData(const QStringList&, OxFSFile*) {
 }
 
 }

src/nostalgia/studio/lib/plugin.cpp

@@ -11,15 +11,15 @@
 namespace nostalgia {
 namespace studio {
 
-QVector<WizardMaker> Plugin::newWizards(const Context *ctx) {
+QVector<WizardMaker> Plugin::newWizards(const Context*) {
 	return {};
 }
 
-QVector<WizardMaker> Plugin::importWizards(const Context *ctx) {
+QVector<WizardMaker> Plugin::importWizards(const Context*) {
 	return {};
 }
 
-QWidget *Plugin::makeEditor(QString path, const Context *ctx) {
+QWidget *Plugin::makeEditor(QString, const Context*) {
 	return nullptr;
 }
 

src/nostalgia/studio/mainwindow.cpp

@@ -190,7 +190,7 @@ QAction *MainWindow::addAction(QMenu *menu, QString text, QString toolTip,
 	return action;
 }
 
-int MainWindow::readState(QString path) {
+int MainWindow::readState(QString) {
 	int err = 0;
 
 	QSettings settings(m_profile.orgName, m_profile.appName);
@@ -206,7 +206,7 @@ int MainWindow::readState(QString path) {
 	return err;
 }
 
-int MainWindow::writeState(QString path) {
+int MainWindow::writeState(QString) {
 	int err = 0;
 
 	// generate JSON for application specific state info