Make FontWrapper conditional

components/widgets/fontwrapper.hpp

@@ -1,6 +1,7 @@
 #ifndef OPENMW_WIDGETS_WRAPPER_H
 #define OPENMW_WIDGETS_WRAPPER_H
 
+#include <MyGUI_Prerequest.h>
 #include <components/settings/settings.hpp>
 
 #include <algorithm>
@@ -10,6 +11,7 @@ namespace Gui
     template <class T>
     class FontWrapper : public T
     {
+#if MYGUI_VERSION <= MYGUI_DEFINE_VERSION(3, 4, 2)
     public:
         void setFontName(const std::string& name) override
         {
@@ -22,6 +24,7 @@ namespace Gui
         {
             T::setPropertyOverride(_key, _value);
 
+            // https://github.com/MyGUI/mygui/issues/113
             // There is a bug in MyGUI: when it initializes the FontName property, it reset the font height.
             // We should restore it.
             if (_key == "FontName")
@@ -31,7 +34,7 @@ namespace Gui
         }
 
     private:
-        std::string getFontSize()
+        const std::string& getFontSize()
         {
             // Note: we can not use the FontLoader here, so there is a code duplication a bit.
             static const std::string fontSize
@@ -39,6 +42,7 @@ namespace Gui
             return fontSize;
         }
     };
+#endif
 }
 
 #endif