From 2e4f150a4712cf531f4dcb9c5c045833b8c7049f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sl=C3=A1vek=20Banko?= <slavek.banko@axis.cz>
Date: Mon, 11 Oct 2021 02:26:07 +0200
Subject: The operator< should be const, so it can be applied to const
 tree_struct. This resolves FTBFS on FreeBSD.
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Signed-off-by: Slávek Banko <slavek.banko@axis.cz>
---
 src/qalculate_tde_utils.h | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/qalculate_tde_utils.h b/src/qalculate_tde_utils.h
index e51d0c1..e0c9238 100644
--- a/src/qalculate_tde_utils.h
+++ b/src/qalculate_tde_utils.h
@@ -41,7 +41,7 @@ struct tree_struct {
 	std::list<tree_struct> items;
 	std::list<tree_struct>::iterator it;
 	std::list<tree_struct>::reverse_iterator rit;
-	std::vector<void*> objects;	
+	std::vector<void*> objects;
 	tree_struct *parent;
 	void sort() {
 		items.sort();
@@ -49,9 +49,10 @@ struct tree_struct {
 			it->sort();
 		}
 	}
-	bool operator < (tree_struct &s1) const {
-		return item < s1.item;	
-	}	
+	bool operator < (const tree_struct &s1) const
+	{
+		return item < s1.item;
+	}
 };
 struct mode_struct {
 	PrintOptions po;
-- 
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