OgreXML: Use the placeholder texture for missing textures

jme3-plugins/src/ogre/java/com/jme3/scene/plugins/ogre/MaterialLoader.java

@@ -151,7 +151,7 @@ public class MaterialLoader implements AssetLoader {
             }
         } catch (AssetNotFoundException ex){
             logger.log(Level.WARNING, "Cannot locate {0} for material {1}", new Object[]{texKey, matName});
-            textures[texUnit].setImage(PlaceholderAssets.getPlaceholderImage());
+            textures[texUnit].setImage(PlaceholderAssets.getPlaceholderImage(assetManager));
             textures[texUnit].setKey(texKey);
         }
     }

jme3-plugins/src/ogre/java/com/jme3/scene/plugins/ogre/matext/MaterialExtensionLoader.java

@@ -81,7 +81,7 @@ public class MaterialExtensionLoader {
                 tex.setWrap(WrapMode.Repeat);
             } catch (AssetNotFoundException ex){
                 logger.log(Level.WARNING, "Cannot locate {0} for material {1}", new Object[]{texKey, key});
-                tex = new Texture2D( PlaceholderAssets.getPlaceholderImage() );
+                tex = new Texture2D( PlaceholderAssets.getPlaceholderImage(assetManager) );
                 tex.setWrap(WrapMode.Repeat);
                 tex.setKey(texKey);
             }