From e0ad1f9076f322f18b54c4f1e0894a9cdd52937c Mon Sep 17 00:00:00 2001
From: Andrei Karas <akaras@inbox.ru>
Date: Mon, 24 Mar 2014 23:42:30 +0300
Subject: Fix memory corruption if use map patch layers.

---
 src/resources/mapreader.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'src/resources/mapreader.cpp')

diff --git a/src/resources/mapreader.cpp b/src/resources/mapreader.cpp
index 4da901b09..6d7591d1d 100644
--- a/src/resources/mapreader.cpp
+++ b/src/resources/mapreader.cpp
@@ -202,6 +202,7 @@ void MapReader::addLayerToList(const std::string &fileName)
         return;
     }
 
+    int cnt = 0;
     for_each_xml_child_node(childNode, node)
     {
         if (!xmlNameEqual(childNode, "layer"))
@@ -213,8 +214,10 @@ void MapReader::addLayerToList(const std::string &fileName)
         logger->log("found patch layer: " + name);
         mKnownLayers[name] = childNode;
         mKnownDocs.insert(doc);
+        cnt ++;
     }
-    delete doc;
+    if (!cnt)
+        delete doc;
 }
 
 Map *MapReader::readMap(const std::string &restrict filename,
-- 
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