Minor formatting update to Lighting.vert

jme3-core/src/main/resources/Common/MatDefs/Light/Lighting.vert

@@ -186,6 +186,6 @@ void main(){
     #endif
 
     #ifdef USE_FOG
-    fog_distance = distance(g_CameraPosition, (TransformWorld(modelSpacePos)).xyz);
+        fog_distance = distance(g_CameraPosition, (TransformWorld(modelSpacePos)).xyz);
     #endif
-}
+}