From 142f08ce1f41fed81fb8d24970645e09ca9f391e Mon Sep 17 00:00:00 2001
From: Moonchild <moonchild@palemoon.org>
Date: Mon, 5 Sep 2022 14:00:07 +0000
Subject: [PATCH] Issue #1720 - Follow-up: Explicitly include X11UndefineNone.h
 in HTMLOptGroupElement.cpp to fix unified building on X11

---
 dom/html/HTMLOptGroupElement.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/dom/html/HTMLOptGroupElement.cpp b/dom/html/HTMLOptGroupElement.cpp
index ad2527dc92..a65a79ecf5 100644
--- a/dom/html/HTMLOptGroupElement.cpp
+++ b/dom/html/HTMLOptGroupElement.cpp
@@ -13,6 +13,10 @@
 #include "nsIFrame.h"
 #include "nsIFormControlFrame.h"
 
+#if defined(MOZ_X11)
+#include "X11UndefineNone.h"
+#endif
+
 NS_IMPL_NS_NEW_HTML_ELEMENT(OptGroup)
 
 namespace mozilla {