- Fixed normal vector incorrect in Mesh.getTriangle() (Thanks Kaelgaga)

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@8147 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

engine/src/core/com/jme3/scene/Mesh.java

@@ -778,6 +778,7 @@ public class Mesh implements Savable, Cloneable {
     public void getTriangle(int index, Triangle tri){
         getTriangle(index, tri.get1(), tri.get2(), tri.get3());
         tri.setIndex(index);
+        tri.setNormal(null);
     }
 
     /**