解决色调曲线不能保存

app/scanner/Scanner_zh_CN.ts

@@ -2753,7 +2753,7 @@ Continue to close?</source>
     <message>
         <location filename="mainwindow.cpp" line="111"/>
         <source>MicrotekScan</source>
-        <translation>Microtek DocWizard EX扫描软件</translation>
+        <translation type="unfinished">Microtek DocWizard EX 扫描软件</translation>
     </message>
     <message>
         <location filename="mainwindow.cpp" line="170"/>

app/scanner/hg_settingdialog.cpp

@@ -1823,11 +1823,12 @@ void hg_settingdialog::on_current_scheme_changed()
                 {
                     title = QString::fromStdString(opt->title);
                     type = opt->type;
+                    if(type == SANE_TYPE_STRING)
+                        val = from_default_language(val.c_str(), nullptr);
                     break;
                 }
             }
 
-            val = from_default_language(val.c_str(), nullptr);
             if(title.length())
             {
                 info += tr("<h6><b>") + title + tr(":</b></h6>");