* Prevent crash when material technique has no world bindings defined. Fixes issue 454

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@9129 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

engine/src/core/com/jme3/material/Technique.java

@@ -228,12 +228,13 @@ public class Technique implements Savable {
 
         // register the world bound uniforms
         worldBindUniforms.clear();
+        if (def.getWorldBindings() != null) {
            for (UniformBinding binding : def.getWorldBindings()) {
                Uniform uniform = shader.getUniform("g_" + binding.name());
                uniform.setBinding(binding);
                if (uniform != null) {
                    worldBindUniforms.add(uniform);
-
+               }
            }
         }