From f71933e93829efc59a5a87c813e3e7766283b87f Mon Sep 17 00:00:00 2001
From: Carles Fernandez <carles.fernandez@gmail.com>
Date: Thu, 17 Aug 2017 17:23:08 +0200
Subject: [PATCH] Use const iterator

---
 src/core/system_parameters/gnss_satellite.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/core/system_parameters/gnss_satellite.cc b/src/core/system_parameters/gnss_satellite.cc
index c56bbe52d..2e2e18f00 100644
--- a/src/core/system_parameters/gnss_satellite.cc
+++ b/src/core/system_parameters/gnss_satellite.cc
@@ -121,9 +121,9 @@ Gnss_Satellite& Gnss_Satellite::operator=(const Gnss_Satellite &rhs) {
 void Gnss_Satellite::set_system(const std::string& system_)
 {
     // Set the satellite system {"GPS", "GLONASS", "SBAS", "Galileo", "Compass"}
-    std::set<std::string>::iterator it = system_set.find(system_);
+    std::set<std::string>::const_iterator it = system_set.find(system_);
 
-    if(it != system_set.end())
+    if(it != system_set.cend())
         {
             system = system_;
         }