Don't load custom fonts when using Chinese or Korean

src/QGCApplication.cc

@@ -474,12 +474,18 @@ void QGCApplication::_initCommon()
 
 bool QGCApplication::_initForNormalAppBoot()
 {
+
+    //-- See App.SettinsGroup.json for index
+    int langID = toolbox()->settingsManager()->appSettings()->language()->rawValue().toInt();
+    //-- Don't load custom fonts if not using standard character set
+    if(langID != 6 /*Korean*/ && langID != 9 /*Chinese*/) {
         if(QFontDatabase::addApplicationFont(":/fonts/opensans") < 0) {
             qWarning() << "Could not load /fonts/opensans font";
         }
         if(QFontDatabase::addApplicationFont(":/fonts/opensans-demibold") < 0) {
             qWarning() << "Could not load /fonts/opensans-demibold font";
         }
+    }
 
     QSettings settings;