调整sane配置参数字符乱码问题

app/scanner/hg_settingdialog.cpp

@@ -799,7 +799,7 @@ void hg_settingdialog::slot_string_list_comboBoxClicked()
 {
     QComboBox *comboBox = qobject_cast<QComboBox*>(sender());
     SANE_Int id = comboBox->property("controls_id").toInt();
-    std::string comboBoxcurrentItem(comboBox->currentText().toLocal8Bit());
+    std::string comboBoxcurrentItem(comboBox->currentText().toUtf8());
 
     const SANE_Option_Descriptor* opt = nullptr;
     for(int i = 0; i < m_list_getOpt.size(); i++)
@@ -1065,7 +1065,7 @@ void hg_settingdialog::slot_lineEditInput()
 {
     QLineEdit* lineEdit = qobject_cast<QLineEdit*>(sender());
     int id = lineEdit->property("controls_id").toInt();
-    std::string lineEditCurrentText(lineEdit->text().toLocal8Bit());
+    std::string lineEditCurrentText(lineEdit->text().toUtf8());
 
     const SANE_Option_Descriptor* opt = nullptr;
     for(int i = 0; i < m_list_getOpt.size(); i++)