From a5de8154d652aa71bd89eabdcf52c397ddebc7e8 Mon Sep 17 00:00:00 2001
From: Artem Pavlenko <artem@mapnik.org>
Date: Thu, 8 Dec 2011 16:20:04 +0000
Subject: [PATCH] pass const reference

---
 include/mapnik/util/geometry_wkt_generator.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/mapnik/util/geometry_wkt_generator.hpp b/include/mapnik/util/geometry_wkt_generator.hpp
index ba4e4a86e..38ce28a02 100644
--- a/include/mapnik/util/geometry_wkt_generator.hpp
+++ b/include/mapnik/util/geometry_wkt_generator.hpp
@@ -143,7 +143,7 @@ struct wkt_generator :
     karma::rule<OutputIterator, geometry_type const& ()> coords;
     karma::rule<OutputIterator, karma::locals<unsigned>, geometry_type const& ()> coords2;
     karma::rule<OutputIterator, geometry_type::value_type ()> point_coord;
-    karma::rule<OutputIterator, geometry_type::value_type (unsigned& )> polygon_coord;
+    karma::rule<OutputIterator, geometry_type::value_type const& (unsigned& )> polygon_coord;
     
     // phoenix functions
     phoenix::function<get_type > _type;