From 47df9506bb1086b04510a85c0cf3ad70ac48aaeb Mon Sep 17 00:00:00 2001
From: bubnikv <bubnikv@gmail.com>
Date: Fri, 19 Jul 2019 17:16:20 +0200
Subject: [PATCH] Fix of OSX Imgui Undo / Redo pull down list scaling issue.

---
 src/slic3r/GUI/GLCanvas3D.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/slic3r/GUI/GLCanvas3D.cpp b/src/slic3r/GUI/GLCanvas3D.cpp
index 265f6eae77..4255f4ecf9 100644
--- a/src/slic3r/GUI/GLCanvas3D.cpp
+++ b/src/slic3r/GUI/GLCanvas3D.cpp
@@ -3514,7 +3514,7 @@ void GLCanvas3D::_render_undo_redo_stack(const bool is_undo, float pos_x)
 
     int hovered = m_imgui_undo_redo_hovered_pos;
     int selected = -1;
-    const float em = static_cast<float>(wxGetApp().em_unit());
+    float em = static_cast<float>(wxGetApp().em_unit());
 #if ENABLE_RETINA_GL
 	em *= m_retina_helper->get_scale_factor();
 #endif