From c5cdfa1a1db4a99b526f8b1116d6d5bd71f01ce6 Mon Sep 17 00:00:00 2001
From: Richard Harrison <rjh@zaretto.com>
Date: Sat, 21 Jan 2017 00:54:01 +0100
Subject: [PATCH] Prevent null pointer deference when load has failed.

This was triggered by the TU154B; probably related to the console error

* "Image loading failed:Warning: reading "fgdata\AI\Aircraft\tu154b\Model" not supported.
---
 simgear/scene/model/SGMaterialAnimation.cxx | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/simgear/scene/model/SGMaterialAnimation.cxx b/simgear/scene/model/SGMaterialAnimation.cxx
index 0169f574..9f7bb733 100644
--- a/simgear/scene/model/SGMaterialAnimation.cxx
+++ b/simgear/scene/model/SGMaterialAnimation.cxx
@@ -450,7 +450,8 @@ SGMaterialAnimation::createAnimationGroup(osg::Group& parent)
         stateSet->setTextureAttribute(0, texture2D,
 				      osg::StateAttribute::OVERRIDE);
         stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::ON);
-        if (texture2D->getImage()->isImageTranslucent()) {
+		osg::ref_ptr<osg::Image> textureImage = texture2D->getImage();
+        if (textureImage && textureImage->isImageTranslucent()) {
           stateSet->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
           stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
         }