From 3b5cd286f6ee51b50baf136040f4033ad589ad81 Mon Sep 17 00:00:00 2001
From: cc9cii <cc9c@iinet.net.au>
Date: Mon, 1 Dec 2014 14:09:22 +1100
Subject: [PATCH] Do not destroy overlay if it was never created (e.g. due to
 an Ogre exception).

---
 apps/opencs/view/render/pagedworldspacewidget.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/apps/opencs/view/render/pagedworldspacewidget.cpp b/apps/opencs/view/render/pagedworldspacewidget.cpp
index bae0fcacf4..e7954491f2 100644
--- a/apps/opencs/view/render/pagedworldspacewidget.cpp
+++ b/apps/opencs/view/render/pagedworldspacewidget.cpp
@@ -362,8 +362,11 @@ CSVRender::PagedWorldspaceWidget::~PagedWorldspaceWidget()
         delete iter->second;
     }
 
-    removeRenderTargetListener(mOverlayMask);
-    delete mOverlayMask;
+    if(mOverlayMask)
+    {
+        removeRenderTargetListener(mOverlayMask);
+        delete mOverlayMask;
+    }
 }
 
 void CSVRender::PagedWorldspaceWidget::useViewHint (const std::string& hint)