From 518a72aa696c1b90a016a988f45e607183f24033 Mon Sep 17 00:00:00 2001
From: Joseph Lenox <lenox.joseph@gmail.com>
Date: Sat, 29 Dec 2018 23:48:01 -0600
Subject: [PATCH] #4621 Applying changes as proposed by review.

---
 xs/src/libslic3r/Config.hpp | 1 -
 xs/src/libslic3r/Print.cpp  | 2 +-
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/xs/src/libslic3r/Config.hpp b/xs/src/libslic3r/Config.hpp
index fd4b29837..7fc5786a4 100644
--- a/xs/src/libslic3r/Config.hpp
+++ b/xs/src/libslic3r/Config.hpp
@@ -4,7 +4,6 @@
 
 #include <initializer_list>
 #include <memory>
-#include <regex>
 #include <string>
 
 #include "PrintConfig.hpp"
diff --git a/xs/src/libslic3r/Print.cpp b/xs/src/libslic3r/Print.cpp
index 27e500576..d768cc5eb 100644
--- a/xs/src/libslic3r/Print.cpp
+++ b/xs/src/libslic3r/Print.cpp
@@ -230,7 +230,7 @@ Print::make_skirt()
         skirts = 1;
     
     const std::set<size_t> extruders{ this->extruders() };
-    auto extruder_it = extruders.begin();
+    auto extruder_it = extruders.cbegin();
     std::vector<float> e_per_mm{0}, extruded_length{0};
     if (this->config.min_skirt_length() > 0)
         for (auto i : extruders)