Fixed mesh.xml material loading where model key was set as the material key preventing further loading when this file was saved as a j3o

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@10413 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

engine/src/ogre/com/jme3/scene/plugins/ogre/MeshLoader.java

@@ -233,7 +233,7 @@ public class MeshLoader extends DefaultHandler implements AssetLoader {
         if (mat == null) {
             logger.log(Level.WARNING, "Cannot locate {0} for model {1}", new Object[]{matName, key});
             mat = PlaceholderAssets.getPlaceholderMaterial(assetManager);          
-            mat.setKey(key);
+            mat.setKey(new MaterialKey(matName));
         }
 
         if (mat.isTransparent()) {