From d477d19ec89503fc612e7cca4e947d68c0b9f747 Mon Sep 17 00:00:00 2001
From: Nyall Dawson <nyall.dawson@gmail.com>
Date: Thu, 25 Aug 2016 18:17:18 +1000
Subject: [PATCH] Fix potential crash

---
 src/core/qgsvectorlayer.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/core/qgsvectorlayer.cpp b/src/core/qgsvectorlayer.cpp
index f9793a4d883..e58931b6393 100644
--- a/src/core/qgsvectorlayer.cpp
+++ b/src/core/qgsvectorlayer.cpp
@@ -1918,8 +1918,11 @@ bool QgsVectorLayer::writeStyle( QDomNode &node, QDomDocument &doc, QString &err
 
   if ( hasGeometryType() )
   {
-    QDomElement rendererElement = mRenderer->save( doc );
-    node.appendChild( rendererElement );
+    if ( mRenderer )
+    {
+      QDomElement rendererElement = mRenderer->save( doc );
+      node.appendChild( rendererElement );
+    }
 
     if ( mLabeling )
     {