fixup! optgroup in init impl

Author: nielsdos

ext/dom/lexbor/lexbor/selectors-adapted/selectors.c

@@ -1638,18 +1638,19 @@ lxb_selectors_pseudo_element_function(lxb_selectors_t *selectors,
 	return false;
 }
 
+/* https://html.spec.whatwg.org/multipage/semantics-other.html#concept-element-disabled */
 static bool
 lxb_selectors_pseudo_class_disabled(const xmlNode *node)
 {
 	if (!lxb_selectors_adapted_has_attr(node, "disabled")) {
 		return false;
 	}
 
-	// TODO: optgroup??
 	if (lxb_selectors_adapted_cmp_local_name_literal(node, "button")
 		|| lxb_selectors_adapted_cmp_local_name_literal(node, "input")
 		|| lxb_selectors_adapted_cmp_local_name_literal(node, "select")
-		|| lxb_selectors_adapted_cmp_local_name_literal(node, "textarea"))
+		|| lxb_selectors_adapted_cmp_local_name_literal(node, "textarea")
+		|| lxb_selectors_adapted_cmp_local_name_literal(node, "optgroup"))
 	{
 		return true;
 	}