From a97bbb52afc1a13ba3a5ddf5fafd4f3085e8607c Mon Sep 17 00:00:00 2001
From: Dane Springmeyer <dane@dbsgeo.com>
Date: Sun, 11 Jan 2009 20:09:32 +0000
Subject: [PATCH] Avoid serialization of maxzoom if value is infinity (default)

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

diff --git a/src/save_map.cpp b/src/save_map.cpp
index 8a8916956..31d6e8fc9 100644
--- a/src/save_map.cpp
+++ b/src/save_map.cpp
@@ -394,7 +394,7 @@ namespace mapnik
             set_attr( layer_node, "minzoom", layer.getMinZoom() );
         }
 
-        if ( layer.getMaxZoom() )
+        if ( layer.getMaxZoom() != std::numeric_limits<double>::max() )
         {
             set_attr( layer_node, "maxzoom", layer.getMaxZoom() );
         }