From 8cdca5f5be97b9fb4de95e0214197f879e6fcfb7 Mon Sep 17 00:00:00 2001
From: David Hummel <6109326+hummeltech@users.noreply.github.com>
Date: Mon, 20 Nov 2023 10:21:12 -0700
Subject: [PATCH] Fix broken builds with libxml2 >= v2.12.0
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**I.E.**
```
src/libxml2_loader.cpp:91:50: error: invalid conversion from ‘const xmlError*’ {aka ‘const _xmlError*’} to ‘xmlError*’ {aka ‘_xmlError*’} [-fpermissive]
src/libxml2_loader.cpp:131:50: error: invalid conversion from ‘const xmlError*’ {aka ‘const _xmlError*’} to ‘xmlError*’ {aka ‘_xmlError*’} [-fpermissive]
```
---
 src/libxml2_loader.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/libxml2_loader.cpp b/src/libxml2_loader.cpp
index 223d8df44..78dc8aa97 100644
--- a/src/libxml2_loader.cpp
+++ b/src/libxml2_loader.cpp
@@ -88,7 +88,7 @@ class libxml2_loader : util::noncopyable
 
         if (!doc)
         {
-            xmlError* error = xmlCtxtGetLastError(ctx_);
+            const xmlError* error = xmlCtxtGetLastError(ctx_);
             if (error)
             {
                 std::string msg("XML document not well formed:\n");
@@ -128,7 +128,7 @@ class libxml2_loader : util::noncopyable
         if (!doc)
         {
             std::string msg("XML document not well formed");
-            xmlError* error = xmlCtxtGetLastError(ctx_);
+            const xmlError* error = xmlCtxtGetLastError(ctx_);
             if (error)
             {
                 msg += ":\n";