* Fixed MTL loader bug when handling Tr/d statement

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@7468 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

engine/src/core-plugins/com/jme3/scene/plugins/MTLLoader.java

@@ -132,7 +132,7 @@ public class MTLLoader implements AssetLoader {
                 else
                     color = new ColorRGBA(ColorRGBA.White);
 
-                color.a = scan.nextFloat();
+                color.a = alpha;
                 material.setColor("Diffuse", color);
                 material.setTransparent(true);
                 material.getAdditionalRenderState().setBlendMode(BlendMode.Alpha);