gnustep-base: fix build with libxml2>=2.11.0

srcpkgs/gnustep-base/patches/37913d006d96a6bdcb963f4ca4889888dcce6094.patch

@@ -0,0 +1,27 @@
+From 37913d006d96a6bdcb963f4ca4889888dcce6094 Mon Sep 17 00:00:00 2001
+From: Frederik Seiffert <frederik@algoriddim.com>
+Date: Wed, 3 May 2023 13:49:09 +0200
+Subject: [PATCH] Fix GSXML compatibility with libxml2 v2.11.0
+
+Fixes #294.
+---
+ Source/Additions/GSXML.m | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/Source/Additions/GSXML.m b/Source/Additions/GSXML.m
+index 37f509564a..01a24c5aa1 100644
+--- a/Source/Additions/GSXML.m
++++ b/Source/Additions/GSXML.m
+@@ -2671,10 +2671,12 @@ + (void) initialize
+                   return NULL;
+                 }
+               ret->owner = 1;
++#if LIBXML_VERSION < 21100
+               if (ret->checked == 0)
+                 {
+                   ret->checked = 1;
+                 }
++#endif
+             }
+         }
+     }