fix compilation with -DDEBUG_WINDOWS

radio/src/thirdparty/libopenui/src/dialog.cpp

@@ -57,7 +57,7 @@ void DialogWindowContent::updateSize()
 }
 
 #if defined(DEBUG_WINDOWS)
-std::string DialogWindowContent::getName() const override
+std::string DialogWindowContent::getName() const
 {
   return "DialogWindowContent";
 }

radio/src/thirdparty/libopenui/src/window.cpp

@@ -248,7 +248,7 @@ std::string Window::getIndentString() const
   return result;
 }
 
-std::string Window::getWindowDebugString(const char *name = nullptr) const
+std::string Window::getWindowDebugString(const char *name) const
 {
   return getName() + (name ? std::string(" [") + name + "] " : " ") +
          getRectString();