From 7572ba58cba276f4bd7d63dedb47c3c43d3b9f00 Mon Sep 17 00:00:00 2001
From: artemp <artem@mapnik.org>
Date: Wed, 28 May 2014 15:40:25 +0100
Subject: [PATCH] fix : allow comparing nullptr == nullptr -> true

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

diff --git a/src/layer.cpp b/src/layer.cpp
index cba5bf86e..a82c4717b 100644
--- a/src/layer.cpp
+++ b/src/layer.cpp
@@ -108,7 +108,7 @@ bool layer::operator==(layer const& rhs) const
         (cache_features_ == rhs.cache_features_) &&
         (group_by_ == rhs.group_by_) &&
         (styles_ == rhs.styles_) &&
-        ((ds_ && rhs.ds_) ? *ds_ == *rhs.ds_ : false) &&
+        ((ds_ && rhs.ds_) ? *ds_ == *rhs.ds_ : ds_ == rhs.ds_) &&
         (buffer_size_ == rhs.buffer_size_) &&
         (maximum_extent_ == rhs.maximum_extent_);
 }