minor refactor

src/graphics/ui/gui_xml.cpp

@@ -287,7 +287,7 @@ static std::wstring parse_inner_text(
 ) {
     std::wstring text = L"";
     if (element.size() == 1) {
-        std::string source = element.sub(0).attr("#").getText();
+        std::string source = element.sub(0).getInnerText();
         util::trim(source);
         text = util::str2wstr_utf8(source);
         if (text[0] == '@') {
@@ -387,7 +387,7 @@ static std::shared_ptr<UINode> read_button(
 
     std::shared_ptr<Button> button;
     auto& elements = element.getElements();
-    if (!elements.empty() && elements[0]->getTag() != "#") {
+    if (!elements.empty() && elements[0]->isText()) {
         auto inner = reader.readUINode(*elements.at(0));
         if (inner != nullptr) {
             button = std::make_shared<Button>(gui, inner, padding);