NOISSUE change icon themes without restart

gui/MainWindow.cpp

@@ -975,6 +975,7 @@ void MainWindow::on_actionSettings_triggered()
 	proxymodel->invalidate();
 	proxymodel->sort(0);
 	updateToolsMenu();
+	update();
 }
 
 void MainWindow::on_actionInstanceSettings_triggered()

gui/pages/global/MultiMCPage.cpp

@@ -272,6 +272,7 @@ void MultiMCPage::applySettings()
 	// Updates
 	s->set("AutoUpdate", ui->autoUpdateCheckBox->isChecked());
 	s->set("UpdateChannel", m_currentUpdateChannel);
+	auto original = s->get("IconTheme").toString();
 	//FIXME: make generic
 	switch (ui->themeComboBox->currentIndex())
 	{
@@ -299,6 +300,11 @@ void MultiMCPage::applySettings()
 		break;
 	}
 
+	if(original != s->get("IconTheme"))
+	{
+		QIcon::setThemeName(s->get("IconTheme").toString());
+	}
+
 	// Console settings
 	s->set("ShowConsole", ui->showConsoleCheck->isChecked());
 	s->set("AutoCloseConsole", ui->autoCloseConsoleCheck->isChecked());