Made the temp BoundingVolume in TempVars a BoundingBox since it's instanciated as a BoundingBox

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@11029 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

engine/src/core/com/jme3/util/TempVars.java

@@ -148,7 +148,7 @@ public class TempVars {
     /**
      * BoundingVolumes (for shadows etc.)
      */
-    public final BoundingVolume bbox = new BoundingBox();
+    public final BoundingBox bbox = new BoundingBox();
     /**
      * Skinning buffers
      */