$OpenBSD: patch-src_expr_cc,v 1.1 2021/06/22 04:19:25 rsadowski Exp $

Fix compilation with Boost 1.76
https://github.com/ledger/ledger/commit/69e6b89cf8d2820d28174e7ffaea1c59a0f84d3f

Index: src/expr.cc
--- src/expr.cc.orig
+++ src/expr.cc
@@ -35,6 +35,9 @@
 #include "parser.h"
 #include "scope.h"
 
+#include <boost/smart_ptr/scoped_ptr.hpp>
+
+
 namespace ledger {
 
 expr_t::expr_t() : base_type()
