XQilla: fix build with GCC 11+.

srcpkgs/XQilla/patches/gcc11.patch

@@ -0,0 +1,13 @@
+From http://git.pld-linux.org/gitweb.cgi?p=packages/xqilla.git;a=commit;h=4efe07397c6fb426a65b2eec6999d3c7e683848a
+
+--- XQilla-2.3.4/include/xqilla/ast/XQDocumentOrder.hpp.orig   2018-07-03 20:37:15.000000000 +0200
++++ XQilla-2.3.4/include/xqilla/ast/XQDocumentOrder.hpp        2022-09-25 20:51:54.768846899 +0200
+@@ -68,7 +68,7 @@ private:
+   public:
+     uniqueLessThanCompareFn(const DynamicContext *context)
+       : context_(context) {}
+-    bool operator()(const Node::Ptr &first, const Node::Ptr &second)
++    bool operator()(const Node::Ptr &first, const Node::Ptr &second) const
+     {
+       return first->uniqueLessThan(second, context_);
+     }

srcpkgs/XQilla/template

@@ -1,7 +1,7 @@
 # Template file for 'XQilla'
 pkgname=XQilla
 version=2.3.4
-revision=1
+revision=2
 build_style=gnu-configure
 configure_args="--with-xerces=${XBPS_CROSS_BASE}/usr"
 hostmakedepends="flex"