From 114ddcff5236295688f8605426f6517bf65566e3 Mon Sep 17 00:00:00 2001
From: James Turner <zakalawe@mac.com>
Date: Thu, 11 Apr 2019 21:39:41 +0100
Subject: [PATCH] Tweak code for older GCC

---
 simgear/scene/viewer/CompositorUtil.hxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/simgear/scene/viewer/CompositorUtil.hxx b/simgear/scene/viewer/CompositorUtil.hxx
index d5385908..2b0d47c9 100644
--- a/simgear/scene/viewer/CompositorUtil.hxx
+++ b/simgear/scene/viewer/CompositorUtil.hxx
@@ -27,7 +27,7 @@ namespace compositor {
  * represented in the property tree. Useful for OSG or OpenGL enums.
  */
 template<class T>
-using PropStringMap = const std::unordered_map<std::string, T>;
+using PropStringMap = std::unordered_map<std::string, T>;
 
 template <class T>
 bool findPropString(const std::string &str,