From 56d635cc152643fc0c68e1a5c00ac673ddd142e6 Mon Sep 17 00:00:00 2001
From: Iain Russell <Iain.Russell@ecmwf.int>
Date: Mon, 3 Apr 2023 13:38:23 +0100
Subject: [PATCH] Remove use of deprecated unary_function [MAGP-1356]

---
 src/common/Polyline.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/common/Polyline.cc b/src/common/Polyline.cc
index 76a117cf6..836697da9 100644
--- a/src/common/Polyline.cc
+++ b/src/common/Polyline.cc
@@ -107,7 +107,7 @@ struct SouthCleaner {
 
     bool operator()(PaperPoint& point) { return point.y_ < -89; }
 };
-struct LonFinder : std::unary_function<PaperPoint, bool> {
+struct LonFinder {
     LonFinder() {}
 
     bool operator()(PaperPoint& point) const { return (same(point.x_, -180.)); }