From 4f4c175a7acc36b210acc153478e28c954917f66 Mon Sep 17 00:00:00 2001
From: Tobias Markus <tobbi@mozilla-uk.org>
Date: Thu, 12 Sep 2013 14:26:29 +0200
Subject: [PATCH] Issue 1015: Adding null-checks to GLRenderer::draw_surface

---
 src/video/gl/gl_renderer.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/video/gl/gl_renderer.cpp b/src/video/gl/gl_renderer.cpp
index 0e66433c4cb..14d64e88b5b 100644
--- a/src/video/gl/gl_renderer.cpp
+++ b/src/video/gl/gl_renderer.cpp
@@ -114,8 +114,20 @@ void
 GLRenderer::draw_surface(const DrawingRequest& request)
 {
   const Surface* surface = (const Surface*) request.request_data;
+  if(surface == NULL)
+  {
+    return;
+  }
   GLTexture* gltexture = static_cast<GLTexture*>(surface->get_texture().get());
+  if(gltexture == NULL)
+  {
+    return;
+  }
   GLSurfaceData *surface_data = static_cast<GLSurfaceData*>(surface->get_surface_data());
+  if(surface_data == NULL)
+  {
+    return;
+  }
 
   GLuint th = gltexture->get_handle();
   if (th != last_texture) {