From b66861e2e5e8a49e11e7489cf22c3007bc7082cc Mon Sep 17 00:00:00 2001
From: Hennadii Stepanov <32963518+hebasto@users.noreply.github.com>
Date: Fri, 29 Nov 2019 20:15:45 +0200
Subject: [PATCH] Fix comparison function signature

This commit fixes build on CentOS 7 with GCC 4.8.5
---
 src/qt/recentrequeststablemodel.cpp | 9 ++++-----
 src/qt/recentrequeststablemodel.h   | 2 +-
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/src/qt/recentrequeststablemodel.cpp b/src/qt/recentrequeststablemodel.cpp
index 6d933f46d6e..18fa5f417f8 100644
--- a/src/qt/recentrequeststablemodel.cpp
+++ b/src/qt/recentrequeststablemodel.cpp
@@ -12,8 +12,7 @@
 #include <clientversion.h>
 #include <streams.h>
 
-#include <algorithm>
-
+#include <utility>
 
 RecentRequestsTableModel::RecentRequestsTableModel(WalletModel *parent) :
     QAbstractTableModel(parent), walletModel(parent)
@@ -214,10 +213,10 @@ void RecentRequestsTableModel::updateDisplayUnit()
     updateAmountColumnTitle();
 }
 
-bool RecentRequestEntryLessThan::operator()(RecentRequestEntry &left, RecentRequestEntry &right) const
+bool RecentRequestEntryLessThan::operator()(const RecentRequestEntry& left, const RecentRequestEntry& right) const
 {
-    RecentRequestEntry *pLeft = &left;
-    RecentRequestEntry *pRight = &right;
+    const RecentRequestEntry* pLeft = &left;
+    const RecentRequestEntry* pRight = &right;
     if (order == Qt::DescendingOrder)
         std::swap(pLeft, pRight);
 
diff --git a/src/qt/recentrequeststablemodel.h b/src/qt/recentrequeststablemodel.h
index 30578b7a03c..f5085f72688 100644
--- a/src/qt/recentrequeststablemodel.h
+++ b/src/qt/recentrequeststablemodel.h
@@ -45,7 +45,7 @@ class RecentRequestEntryLessThan
 public:
     RecentRequestEntryLessThan(int nColumn, Qt::SortOrder fOrder):
         column(nColumn), order(fOrder) {}
-    bool operator()(RecentRequestEntry &left, RecentRequestEntry &right) const;
+    bool operator()(const RecentRequestEntry& left, const RecentRequestEntry& right) const;
 
 private:
     int column;